diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..87a8281
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,60 @@
+# syntax = docker/dockerfile:1
+
+# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
+ARG RUBY_VERSION=3.3.5
+FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
+
+# Rails app lives here
+WORKDIR /rails
+
+# Set production environment
+ENV RAILS_ENV="production" \
+    BUNDLE_DEPLOYMENT="1" \
+    BUNDLE_PATH="/usr/local/bundle" \
+    BUNDLE_WITHOUT="development"
+
+# Throw-away build stage to reduce size of final image
+FROM base as build
+
+# Install packages needed to build gems
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y build-essential git libvips pkg-config libpq-dev libsqlite3-dev nodejs yarn
+
+# Install application gems
+COPY Gemfile Gemfile.lock ./
+RUN bundle install && \
+    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
+    bundle exec bootsnap precompile --gemfile
+
+# Copy application code
+COPY . .
+
+# Precompile bootsnap code for faster boot times
+RUN bundle exec bootsnap precompile app/ lib/
+
+# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
+RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
+
+# Final stage for app image
+FROM base
+
+# Install packages needed for deployment
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y curl libsqlite3-0 nodejs libpq5 libvips && \
+    rm -rf /var/lib/apt/lists /var/cache/apt/archives
+
+# Copy built artifacts: gems, application
+COPY --from=build /usr/local/bundle /usr/local/bundle
+COPY --from=build /rails /rails
+
+# Run and own only the runtime files as a non-root user for security
+RUN useradd rails --create-home --shell /bin/bash && \
+    chown -R rails:rails db log storage tmp
+USER rails:rails
+
+# Entrypoint prepares the database.
+ENTRYPOINT ["/rails/bin/docker-entrypoint"]
+
+# Start the server by default, this can be overwritten at runtime
+EXPOSE 3000
+CMD ["./bin/rails", "server", "--early-hints"]
diff --git a/Gemfile b/Gemfile
index 6a9a35e..7371808 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,33 +1,30 @@
 source 'https://rubygems.org'
 
-gem 'rails', '~> 6.0.4'
+gem 'rails', '~> 7.2.1'
 
-gem 'sqlite3'
+gem 'coffee-rails'
 gem 'sass-rails'
 gem 'uglifier'
-gem 'coffee-rails'
 # gem 'therubyracer', platforms: :ruby
 
-gem 'jquery-rails'
 gem 'jbuilder'
+gem 'jquery-rails'
 
 gem 'activeresource', github: 'rails/activeresource', require: 'active_resource'
 
 gem 'pry-rails'
-gem "rack-attack", "~> 6.7"
+gem 'rack-attack'
+
+gem 'bootsnap', require: false
 
 # gem 'spreadsheet_architect'
 
 group :development do
   gem 'spring'
-  gem 'capistrano-rails'
-  gem 'capistrano-rvm'
-  gem 'capistrano3-puma'
-  gem 'ed25519'
-  gem 'listen'
+  gem 'sqlite3'
 end
 
 group :production do
-  gem 'puma', '< 5'
   gem 'pg'
+  gem 'puma'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 24edf39..7a1b000 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GIT
   remote: https://github.com/rails/activeresource.git
-  revision: 9dfc15e98007d0e546c404d7236a218bb04a8698
+  revision: a1f6a19652709f2da6aaa2559f7cd0a4f7d2cf3e
   specs:
-    activeresource (6.0.0)
+    activeresource (6.1.1)
       activemodel (>= 6.0)
       activemodel-serializers-xml (~> 1.0)
       activesupport (>= 6.0)
@@ -10,85 +10,85 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (6.0.5.1)
-      actionpack (= 6.0.5.1)
+    actioncable (7.2.1)
+      actionpack (= 7.2.1)
+      activesupport (= 7.2.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailbox (6.0.5.1)
-      actionpack (= 6.0.5.1)
-      activejob (= 6.0.5.1)
-      activerecord (= 6.0.5.1)
-      activestorage (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
-      mail (>= 2.7.1)
-    actionmailer (6.0.5.1)
-      actionpack (= 6.0.5.1)
-      actionview (= 6.0.5.1)
-      activejob (= 6.0.5.1)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (6.0.5.1)
-      actionview (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
-      rack (~> 2.0, >= 2.0.8)
-      rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actiontext (6.0.5.1)
-      actionpack (= 6.0.5.1)
-      activerecord (= 6.0.5.1)
-      activestorage (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
+      zeitwerk (~> 2.6)
+    actionmailbox (7.2.1)
+      actionpack (= 7.2.1)
+      activejob (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
+      mail (>= 2.8.0)
+    actionmailer (7.2.1)
+      actionpack (= 7.2.1)
+      actionview (= 7.2.1)
+      activejob (= 7.2.1)
+      activesupport (= 7.2.1)
+      mail (>= 2.8.0)
+      rails-dom-testing (~> 2.2)
+    actionpack (7.2.1)
+      actionview (= 7.2.1)
+      activesupport (= 7.2.1)
       nokogiri (>= 1.8.5)
-    actionview (6.0.5.1)
-      activesupport (= 6.0.5.1)
+      racc
+      rack (>= 2.2.4, < 3.2)
+      rack-session (>= 1.0.1)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+      useragent (~> 0.16)
+    actiontext (7.2.1)
+      actionpack (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (7.2.1)
+      activesupport (= 7.2.1)
       builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activejob (6.0.5.1)
-      activesupport (= 6.0.5.1)
+      erubi (~> 1.11)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    activejob (7.2.1)
+      activesupport (= 7.2.1)
       globalid (>= 0.3.6)
-    activemodel (6.0.5.1)
-      activesupport (= 6.0.5.1)
+    activemodel (7.2.1)
+      activesupport (= 7.2.1)
     activemodel-serializers-xml (1.0.2)
       activemodel (> 5.x)
       activesupport (> 5.x)
       builder (~> 3.1)
-    activerecord (6.0.5.1)
-      activemodel (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
-    activestorage (6.0.5.1)
-      actionpack (= 6.0.5.1)
-      activejob (= 6.0.5.1)
-      activerecord (= 6.0.5.1)
+    activerecord (7.2.1)
+      activemodel (= 7.2.1)
+      activesupport (= 7.2.1)
+      timeout (>= 0.4.0)
+    activestorage (7.2.1)
+      actionpack (= 7.2.1)
+      activejob (= 7.2.1)
+      activerecord (= 7.2.1)
+      activesupport (= 7.2.1)
       marcel (~> 1.0)
-    activesupport (6.0.5.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2, >= 2.2.2)
-    airbrussh (1.4.1)
-      sshkit (>= 1.6.1, != 1.7.0)
-    builder (3.2.4)
-    capistrano (3.17.1)
-      airbrussh (>= 1.0.0)
-      i18n
-      rake (>= 10.0.0)
-      sshkit (>= 1.9.0)
-    capistrano-bundler (2.1.0)
-      capistrano (~> 3.1)
-    capistrano-rails (1.6.2)
-      capistrano (~> 3.1)
-      capistrano-bundler (>= 1.1, < 3)
-    capistrano-rvm (0.1.2)
-      capistrano (~> 3.0)
-      sshkit (~> 1.2)
-    capistrano3-puma (5.2.0)
-      capistrano (~> 3.7)
-      capistrano-bundler
-      puma (>= 4.0, < 6.0)
+    activesupport (7.2.1)
+      base64
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
+      minitest (>= 5.1)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+    base64 (0.2.0)
+    bigdecimal (3.1.8)
+    bootsnap (1.18.4)
+      msgpack (~> 1.2)
+    builder (3.3.0)
     coderay (1.1.3)
     coffee-rails (5.0.0)
       coffee-script (>= 2.2.0)
@@ -97,87 +97,112 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.3.4)
+    connection_pool (2.4.1)
     crass (1.0.6)
-    ed25519 (1.3.0)
-    erubi (1.11.0)
-    execjs (2.8.1)
-    ffi (1.15.5)
-    globalid (1.0.0)
-      activesupport (>= 5.0)
-    i18n (1.12.0)
+    date (3.3.4)
+    drb (2.2.1)
+    erubi (1.13.0)
+    execjs (2.9.1)
+    ffi (1.17.0)
+    globalid (1.2.1)
+      activesupport (>= 6.1)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
-    jbuilder (2.11.5)
+    io-console (0.7.2)
+    irb (1.14.0)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
+    jbuilder (2.12.0)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
-    jquery-rails (4.5.0)
+    jquery-rails (4.6.0)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    listen (3.7.1)
-      rb-fsevent (~> 0.10, >= 0.10.3)
-      rb-inotify (~> 0.9, >= 0.9.10)
-    loofah (2.18.0)
+    logger (1.6.1)
+    loofah (2.22.0)
       crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    mail (2.7.1)
+      nokogiri (>= 1.12.0)
+    mail (2.8.1)
       mini_mime (>= 0.1.1)
-    marcel (1.0.2)
-    method_source (1.0.0)
-    mini_mime (1.1.2)
-    mini_portile2 (2.8.0)
-    minitest (5.16.3)
-    net-scp (4.0.0.rc1)
-      net-ssh (>= 2.6.5, < 8.0.0)
-    net-ssh (7.0.1)
-    nio4r (2.5.8)
-    nokogiri (1.13.8)
-      mini_portile2 (~> 2.8.0)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.4)
+    method_source (1.1.0)
+    mini_mime (1.1.5)
+    mini_portile2 (2.8.7)
+    minitest (5.25.1)
+    msgpack (1.7.2)
+    net-imap (0.4.16)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.0)
+      net-protocol
+    nio4r (2.7.3)
+    nokogiri (1.16.7)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    pg (1.4.3)
-    pry (0.14.1)
+    pg (1.5.8)
+    pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    pry-rails (0.3.9)
-      pry (>= 0.10.4)
-    puma (4.3.12)
+    pry-rails (0.3.11)
+      pry (>= 0.13.0)
+    psych (5.1.2)
+      stringio
+    puma (6.4.2)
       nio4r (~> 2.0)
-    racc (1.6.0)
-    rack (2.2.4)
+    racc (1.8.1)
+    rack (3.1.7)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
-    rack-test (2.0.2)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
+    rack-test (2.1.0)
       rack (>= 1.3)
-    rails (6.0.5.1)
-      actioncable (= 6.0.5.1)
-      actionmailbox (= 6.0.5.1)
-      actionmailer (= 6.0.5.1)
-      actionpack (= 6.0.5.1)
-      actiontext (= 6.0.5.1)
-      actionview (= 6.0.5.1)
-      activejob (= 6.0.5.1)
-      activemodel (= 6.0.5.1)
-      activerecord (= 6.0.5.1)
-      activestorage (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
-      bundler (>= 1.3.0)
-      railties (= 6.0.5.1)
-      sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
+    rackup (2.1.0)
+      rack (>= 3)
+      webrick (~> 1.8)
+    rails (7.2.1)
+      actioncable (= 7.2.1)
+      actionmailbox (= 7.2.1)
+      actionmailer (= 7.2.1)
+      actionpack (= 7.2.1)
+      actiontext (= 7.2.1)
+      actionview (= 7.2.1)
+      activejob (= 7.2.1)
+      activemodel (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
+      bundler (>= 1.15.0)
+      railties (= 7.2.1)
+    rails-dom-testing (2.2.0)
+      activesupport (>= 5.0.0)
+      minitest
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.3)
-      loofah (~> 2.3)
-    railties (6.0.5.1)
-      actionpack (= 6.0.5.1)
-      activesupport (= 6.0.5.1)
-      method_source
-      rake (>= 0.8.7)
-      thor (>= 0.20.3, < 2.0)
-    rake (13.0.6)
-    rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
-      ffi (~> 1.0)
+    rails-html-sanitizer (1.6.0)
+      loofah (~> 2.21)
+      nokogiri (~> 1.14)
+    railties (7.2.1)
+      actionpack (= 7.2.1)
+      activesupport (= 7.2.1)
+      irb (~> 1.13)
+      rackup (>= 1.0.0)
+      rake (>= 12.2)
+      thor (~> 1.0, >= 1.2.2)
+      zeitwerk (~> 2.6)
+    rake (13.2.1)
+    rdoc (6.7.0)
+      psych (>= 4.0.0)
+    reline (0.5.10)
+      io-console (~> 0.5)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
     sassc (2.4.0)
@@ -188,52 +213,50 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    spring (4.0.0)
-    sprockets (4.1.1)
+    securerandom (0.3.1)
+    spring (4.2.1)
+    sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.4.2)
-      actionpack (>= 5.2)
-      activesupport (>= 5.2)
+      rack (>= 2.2.4, < 4)
+    sprockets-rails (3.5.2)
+      actionpack (>= 6.1)
+      activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    sqlite3 (1.4.4)
-    sshkit (1.21.2)
-      net-scp (>= 1.1.2)
-      net-ssh (>= 2.8.0)
-    thor (1.2.1)
-    thread_safe (0.3.6)
-    tilt (2.0.11)
-    tzinfo (1.2.10)
-      thread_safe (~> 0.1)
+    sqlite3 (2.0.4)
+      mini_portile2 (~> 2.8.0)
+    stringio (3.1.1)
+    thor (1.3.2)
+    tilt (2.4.0)
+    timeout (0.4.1)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
-    websocket-driver (0.7.5)
+    useragent (0.16.10)
+    webrick (1.8.1)
+    websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.6.0)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   activeresource!
-  capistrano-rails
-  capistrano-rvm
-  capistrano3-puma
+  bootsnap
   coffee-rails
-  ed25519
   jbuilder
   jquery-rails
-  listen
   pg
   pry-rails
-  puma (< 5)
-  rack-attack (~> 6.7)
-  rails (~> 6.0.4)
+  puma
+  rack-attack
+  rails (~> 7.2.1)
   sass-rails
   spring
   sqlite3
   uglifier
 
 BUNDLED WITH
-   2.2.22
+   2.5.16
diff --git a/app/assets/images/2023_fb_preview.jpg b/app/assets/images/2023_fb_preview.jpg
deleted file mode 100644
index 1f8b430..0000000
Binary files a/app/assets/images/2023_fb_preview.jpg and /dev/null differ
diff --git a/app/assets/images/openfest-splash.png b/app/assets/images/openfest-splash.png
deleted file mode 100644
index 8625015..0000000
Binary files a/app/assets/images/openfest-splash.png and /dev/null differ
diff --git a/app/assets/images/openfest-splash.webp b/app/assets/images/openfest-splash.webp
new file mode 100644
index 0000000..614f155
Binary files /dev/null and b/app/assets/images/openfest-splash.webp differ
diff --git a/app/models/talk.rb b/app/models/talk.rb
index b3fc2a9..fd3e0cd 100644
--- a/app/models/talk.rb
+++ b/app/models/talk.rb
@@ -1,8 +1,8 @@
 class Talk < ActiveResource::Base
   has_many :selections, class_name: 'SelectedTalk'
 
-  self.site = "https://cfp.openfest.org/api/conferences/10"
-  self.element_name = "event"
+  self.site = 'https://cfp.openfest.org/api/conferences/11'
+  self.element_name = 'event'
 
   def self.ordered_by_id
     find(:all, from: :halfnarp_friendly).sort_by(&:id)
diff --git a/app/views/home/index.html.erb b/app/views/home/index.html.erb
index 43d77e4..3c89126 100644
--- a/app/views/home/index.html.erb
+++ b/app/views/home/index.html.erb
@@ -72,8 +72,7 @@
 <div class="wholeday room1 day_1 guide"></div>
 <div class="wholeday room1 day_3 guide"></div>
 
-<div class="track" id="77"><h2>Technical</h2><div id="qrcode" class="hidden"></div></div>
-<div class="track" id="76"><h2>Advanced Technical</h2></div>
-<div class="track" id="75"><h2>OpenArt</h2></div>
-<div class="track" id="74"><h2>Community/Social</h2></div>
-<div class="track" id="78"><h2>Other</h2></div>
+<div class="track" id="80"><h2>Technical</h2><div id="qrcode" class="hidden"></div></div>
+<div class="track" id="79"><h2>Advanced Technical</h2></div>
+<div class="track" id="81"><h2>OpenArt</h2></div>
+<div class="track" id="82"><h2>Community/Social</h2></div>
diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 7438b80..ec2c76c 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -10,11 +10,11 @@
     <meta name="twitter:site" content="@openfestbg">
     <meta name="twitter:title" content="<%= t 'generic.title' %>">
     <meta name="twitter:description" content="<%= t 'generic.help_us_reduce_the_conflicts' %>">
-    <meta name="twitter:image" content="<%= image_url '2023_fb_preview.jpg' %>">
+    <meta name="twitter:image" content="<%= image_url 'openfest-splash.webp' %>">
     <meta property="og:type" content="website">
     <meta property="og:url" content="https://vote.openfest.org/" />
     <meta property="og:title" content="<%= t 'generic.title' %>">
-    <meta property="og:image" content="<%= image_url '2023_fb_preview.jpg' %>">
+    <meta property="og:image" content="<%= image_url 'openfest-splash.webp' %>">
     <meta property="og:description" content="<%= t 'generic.help_us_reduce_the_conflicts' %>">
   </head>
   <body class="size-small in-list halfnarp">
diff --git a/bin/docker-entrypoint b/bin/docker-entrypoint
new file mode 100755
index 0000000..67ef493
--- /dev/null
+++ b/bin/docker-entrypoint
@@ -0,0 +1,8 @@
+#!/bin/bash -e
+
+# If running the rails server then create or migrate existing database
+if [ "${1}" == "./bin/rails" ] && [ "${2}" == "server" ]; then
+  ./bin/rails db:prepare
+fi
+
+exec "${@}"
diff --git a/bin/rails b/bin/rails
index 0739660..efc0377 100755
--- a/bin/rails
+++ b/bin/rails
@@ -1,4 +1,4 @@
 #!/usr/bin/env ruby
-APP_PATH = File.expand_path('../config/application', __dir__)
-require_relative '../config/boot'
-require 'rails/commands'
+APP_PATH = File.expand_path("../config/application", __dir__)
+require_relative "../config/boot"
+require "rails/commands"
diff --git a/bin/rake b/bin/rake
index 1724048..4fbf10b 100755
--- a/bin/rake
+++ b/bin/rake
@@ -1,4 +1,4 @@
 #!/usr/bin/env ruby
-require_relative '../config/boot'
-require 'rake'
+require_relative "../config/boot"
+require "rake"
 Rake.application.run
diff --git a/bin/setup b/bin/setup
index 5853b5e..76a6ca3 100755
--- a/bin/setup
+++ b/bin/setup
@@ -1,36 +1,37 @@
 #!/usr/bin/env ruby
-require 'fileutils'
+require "fileutils"
 
-# path to your application root.
-APP_ROOT = File.expand_path('..', __dir__)
+APP_ROOT = File.expand_path("..", __dir__)
+APP_NAME = "gauge"
 
 def system!(*args)
-  system(*args) || abort("\n== Command #{args} failed ==")
+  system(*args, exception: true)
 end
 
 FileUtils.chdir APP_ROOT do
-  # This script is a way to setup or update your development environment automatically.
-  # This script is idempotent, so that you can run it at anytime and get an expectable outcome.
+  # This script is a way to set up or update your development environment automatically.
+  # This script is idempotent, so that you can run it at any time and get an expectable outcome.
   # Add necessary setup steps to this file.
 
-  puts '== Installing dependencies =='
-  system! 'gem install bundler --conservative'
-  system('bundle check') || system!('bundle install')
-
-  # Install JavaScript dependencies
-  # system('bin/yarn')
+  puts "== Installing dependencies =="
+  system! "gem install bundler --conservative"
+  system("bundle check") || system!("bundle install")
 
   # puts "\n== Copying sample files =="
-  # unless File.exist?('config/database.yml')
-  #   FileUtils.cp 'config/database.yml.sample', 'config/database.yml'
+  # unless File.exist?("config/database.yml")
+  #   FileUtils.cp "config/database.yml.sample", "config/database.yml"
   # end
 
   puts "\n== Preparing database =="
-  system! 'bin/rails db:prepare'
+  system! "bin/rails db:prepare"
 
   puts "\n== Removing old logs and tempfiles =="
-  system! 'bin/rails log:clear tmp:clear'
+  system! "bin/rails log:clear tmp:clear"
 
   puts "\n== Restarting application server =="
-  system! 'bin/rails restart'
+  system! "bin/rails restart"
+
+  # puts "\n== Configuring puma-dev =="
+  # system "ln -nfs #{APP_ROOT} ~/.puma-dev/#{APP_NAME}"
+  # system "curl -Is https://#{APP_NAME}.test/up | head -n 1"
 end
diff --git a/config/application.rb b/config/application.rb
index cb340d7..84c0841 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -9,16 +9,24 @@ Bundler.require(*Rails.groups)
 module Gauge
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 5.1
+    config.load_defaults 7.2
 
     # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
-    config.i18n.available_locales = [:bg, :en]
+    config.i18n.available_locales = %i[bg en]
     config.i18n.default_locale = :bg
 
-    # Settings in config/environments/* take precedence over those specified here.
-    # Application configuration can go into files in config/initializers
-    # -- all .rb files in that directory are automatically loaded after loading
-    # the framework and any gems in your application.
+    # Please, add to the `ignore` list any other `lib` subdirectories that do
+    # not contain `.rb` files, or that should not be reloaded or eager loaded.
+    # Common ones are `templates`, `generators`, or `middleware`, for example.
+    config.autoload_lib(ignore: %w[assets tasks])
+
+    # Configuration for the application, engines, and railties goes here.
+    #
+    # These settings can be overridden in specific environments using the files
+    # in config/environments, which are processed later.
+    #
+    # config.time_zone = "Central Time (US & Canada)"
+    # config.eager_load_paths << Rails.root.join("extras")
   end
 end
diff --git a/config/boot.rb b/config/boot.rb
index 30f5120..da8896b 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,3 +1,4 @@
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
 
 require 'bundler/setup' # Set up gems listed in the Gemfile.
+require 'bootsnap/setup'
diff --git a/config/database.yml b/config/database.yml
index 1c1a37c..b19c0c5 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -21,5 +21,10 @@ test:
   database: db/test.sqlite3
 
 production:
-  <<: *default
-  database: db/production.sqlite3
+  adapter: postgresql
+  encoding: unicode
+  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
+  host: <%= ENV.fetch("GAUGE_DATABASE_HOST") { "host.containers.internal" } %>
+  database: gauge
+  username: gauge
+  password: <%= ENV["GAUGE_DATABASE_PASSWORD"] %>
diff --git a/config/environment.rb b/config/environment.rb
index 426333b..cac5315 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,5 +1,5 @@
 # Load the Rails application.
-require_relative 'application'
+require_relative "application"
 
 # Initialize the Rails application.
 Rails.application.initialize!
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 66df51f..c0a54a6 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,10 +1,12 @@
+require "active_support/core_ext/integer/time"
+
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
-  # In the development environment your application's code is reloaded on
-  # every request. This slows down response time but is perfect for development
+  # In the development environment your application's code is reloaded any time
+  # it changes. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.
-  config.cache_classes = false
+  config.enable_reloading = true
 
   # Do not eager load code on boot.
   config.eager_load = false
@@ -12,16 +14,17 @@ Rails.application.configure do
   # Show full error reports.
   config.consider_all_requests_local = true
 
+  # Enable server timing.
+  config.server_timing = true
+
   # Enable/disable caching. By default caching is disabled.
   # Run rails dev:cache to toggle caching.
-  if Rails.root.join('tmp', 'caching-dev.txt').exist?
+  if Rails.root.join("tmp/caching-dev.txt").exist?
     config.action_controller.perform_caching = true
     config.action_controller.enable_fragment_cache_logging = true
 
     config.cache_store = :memory_store
-    config.public_file_server.headers = {
-      'Cache-Control' => "public, max-age=#{2.days.to_i}"
-    }
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
   else
     config.action_controller.perform_caching = false
 
@@ -34,29 +37,42 @@ Rails.application.configure do
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
+
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
+  # Raise exceptions for disallowed deprecations.
+  config.active_support.disallowed_deprecation = :raise
+
+  # Tell Active Support which deprecation messages to disallow.
+  config.active_support.disallowed_deprecation_warnings = []
+
   # Raise an error on page load if there are pending migrations.
   config.active_record.migration_error = :page_load
 
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
-  # Debug mode disables concatenation and preprocessing of assets.
-  # This option may cause significant delays in view rendering with a large
-  # number of complex assets.
-  config.assets.debug = true
+  # Highlight code that enqueued background job in logs.
+  config.active_job.verbose_enqueue_logs = true
 
   # Suppress logger output for asset requests.
   config.assets.quiet = true
 
   # Raises error for missing translations.
-  # config.action_view.raise_on_missing_translations = true
+  # config.i18n.raise_on_missing_translations = true
 
-  # Use an evented file watcher to asynchronously detect changes in source code,
-  # routes, locales, etc. This feature depends on the listen gem.
-  config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+  # Annotate rendered view with file names.
+  config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Uncomment if you wish to allow Action Cable access from any origin.
+  # config.action_cable.disable_request_forgery_protection = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 27ddd01..d8e0d7f 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,8 +1,10 @@
+require "active_support/core_ext/integer/time"
+
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
   # Code is not reloaded between requests.
-  config.cache_classes = true
+  config.enable_reloading = false
 
   # Eager load code on boot. This eager loads most of Rails and
   # your application in memory, allowing both threaded web servers
@@ -11,56 +13,69 @@ Rails.application.configure do
   config.eager_load = true
 
   # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
+  config.consider_all_requests_local = false
   config.action_controller.perform_caching = true
 
-  # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
-  # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
+  # Ensures that a master key has been made available in ENV["RAILS_MASTER_KEY"], config/master.key, or an environment
+  # key such as config/credentials/production.key. This key is used to decrypt credentials (and other encrypted files).
   # config.require_master_key = true
 
-  # Disable serving static files from the `/public` folder by default since
-  # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
+  # Disable serving static files from `public/`, relying on NGINX/Apache to do so instead.
+  # config.public_file_server.enabled = false
 
-  # Compress JavaScripts and CSS.
-  config.assets.js_compressor = :uglifier
+  # Compress CSS using a preprocessor.
   # config.assets.css_compressor = :sass
 
-  # Do not fallback to assets pipeline if a precompiled asset is missed.
+  # Do not fall back to assets pipeline if a precompiled asset is missed.
   config.assets.compile = false
 
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
-  # config.action_controller.asset_host = 'http://assets.example.com'
+  # config.asset_host = "http://assets.example.com"
 
   # Specifies the header that your server uses for sending files.
-  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
-  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
+  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for Apache
+  # config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" # for NGINX
 
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
 
   # Mount Action Cable outside main process or domain.
   # config.action_cable.mount_path = nil
-  # config.action_cable.url = 'wss://example.com/cable'
-  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]
+  # config.action_cable.url = "wss://example.com/cable"
+  # config.action_cable.allowed_request_origins = [ "http://example.com", /http:\/\/example.*/ ]
+
+  # Assume all access to the app is happening through a SSL-terminating reverse proxy.
+  # Can be used together with config.force_ssl for Strict-Transport-Security and secure cookies.
+  # config.assume_ssl = true
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   config.force_ssl = true
 
-  # Use the lowest log level to ensure availability of diagnostic information
-  # when problems arise.
-  config.log_level = :debug
+  # Skip http-to-https redirect for the default health check endpoint.
+  # config.ssl_options = { redirect: { exclude: ->(request) { request.path == "/up" } } }
+
+  # Log to STDOUT by default
+  config.logger = ActiveSupport::Logger.new(STDOUT)
+    .tap  { |logger| logger.formatter = ::Logger::Formatter.new }
+    .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
 
   # Prepend all log lines with the following tags.
   config.log_tags = [ :request_id ]
 
+  # "info" includes generic and useful information about system operation, but avoids logging too much
+  # information to avoid inadvertent exposure of personally identifiable information (PII). If you
+  # want to log everything, set the level to "debug".
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
+
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
 
   # Use a real queuing backend for Active Job (and separate queues per environment).
-  # config.active_job.queue_adapter     = :resque
+  # config.active_job.queue_adapter = :resque
   # config.active_job.queue_name_prefix = "gauge_production"
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
   # Ignore bad email addresses and do not raise email delivery errors.
@@ -71,43 +86,17 @@ Rails.application.configure do
   # the I18n.default_locale when a translation cannot be found).
   config.i18n.fallbacks = true
 
-  # Send deprecation notices to registered listeners.
-  config.active_support.deprecation = :notify
-
-  # Use default logging formatter so that PID and timestamp are not suppressed.
-  config.log_formatter = ::Logger::Formatter.new
-
-  # Use a different logger for distributed setups.
-  # require 'syslog/logger'
-  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')
-
-  if ENV["RAILS_LOG_TO_STDOUT"].present?
-    logger           = ActiveSupport::Logger.new(STDOUT)
-    logger.formatter = config.log_formatter
-    config.logger    = ActiveSupport::TaggedLogging.new(logger)
-  end
+  # Don't log any deprecations.
+  config.active_support.report_deprecations = false
 
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
 
-  # Inserts middleware to perform automatic connection switching.
-  # The `database_selector` hash is used to pass options to the DatabaseSelector
-  # middleware. The `delay` is used to determine how long to wait after a write
-  # to send a subsequent read to the primary.
-  #
-  # The `database_resolver` class is used by the middleware to determine which
-  # database is appropriate to use based on the time delay.
-  #
-  # The `database_resolver_context` class is used by the middleware to set
-  # timestamps for the last write to the primary. The resolver uses the context
-  # class timestamps to determine how long to wait before reading from the
-  # replica.
-  #
-  # By default Rails will store a last write timestamp in the session. The
-  # DatabaseSelector middleware is designed as such you can define your own
-  # strategy for connection switching and pass that into the middleware through
-  # these configuration options.
-  # config.active_record.database_selector = { delay: 2.seconds }
-  # config.active_record.database_resolver = ActiveRecord::Middleware::DatabaseSelector::Resolver
-  # config.active_record.database_resolver_context = ActiveRecord::Middleware::DatabaseSelector::Resolver::Session
+  # Enable DNS rebinding protection and other `Host` header attacks.
+  # config.hosts = [
+  #   "example.com",     # Allow requests from example.com
+  #   /.*\.example\.com/ # Allow requests from subdomains like `www.example.com`
+  # ]
+  # Skip DNS rebinding protection for the default health check endpoint.
+  # config.host_authorization = { exclude: ->(request) { request.path == "/up" } }
 end
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 4e9d6d5..0c616a1 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -1,3 +1,5 @@
+require "active_support/core_ext/integer/time"
+
 # The test environment is used exclusively to run your application's
 # test suite. You never need to work with it otherwise. Remember that
 # your test database is "scratch space" for the test suite and is wiped
@@ -5,27 +7,26 @@
 
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
-  
-  config.cache_classes = true
 
-  # Do not eager load code on boot. This avoids loading your whole application
-  # just for the purpose of running a single test. If you are using a tool that
-  # preloads Rails for running tests, you may have to set it to true.
-  config.eager_load = false
+  # While tests run files are not watched, reloading is not necessary.
+  config.enable_reloading = false
+
+  # Eager loading loads your entire application. When running a single test locally,
+  # this is usually not necessary, and can slow down your test suite. However, it's
+  # recommended that you enable it in continuous integration systems to ensure eager
+  # loading is working properly before deploying your code.
+  config.eager_load = ENV["CI"].present?
 
   # Configure public file server for tests with Cache-Control for performance.
-  config.public_file_server.enabled = true
-  config.public_file_server.headers = {
-    'Cache-Control' => "public, max-age=#{1.hour.to_i}"
-  }
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
 
   # Show full error reports and disable caching.
-  config.consider_all_requests_local       = true
+  config.consider_all_requests_local = true
   config.action_controller.perform_caching = false
   config.cache_store = :null_store
 
-  # Raise exceptions instead of rendering exception templates.
-  config.action_dispatch.show_exceptions = false
+  # Render exception templates for rescuable exceptions and raise for other exceptions.
+  config.action_dispatch.show_exceptions = :rescuable
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
@@ -33,6 +34,8 @@ Rails.application.configure do
   # Store uploaded files on the local file system in a temporary directory.
   config.active_storage.service = :test
 
+  # Disable caching for Action Mailer templates even if Action Controller
+  # caching is enabled.
   config.action_mailer.perform_caching = false
 
   # Tell Action Mailer not to deliver emails to the real world.
@@ -40,9 +43,25 @@ Rails.application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
+  # Unlike controllers, the mailer instance doesn't have any context about the
+  # incoming request so you'll need to provide the :host parameter yourself.
+  config.action_mailer.default_url_options = { host: "www.example.com" }
+
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 
+  # Raise exceptions for disallowed deprecations.
+  config.active_support.disallowed_deprecation = :raise
+
+  # Tell Active Support which deprecation messages to disallow.
+  config.active_support.disallowed_deprecation_warnings = []
+
   # Raises error for missing translations.
-  # config.action_view.raise_on_missing_translations = true
+  # config.i18n.raise_on_missing_translations = true
+
+  # Annotate rendered view with file names.
+  # config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
 end
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index 4b828e8..bd5bcd2 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -1,14 +1,12 @@
 # Be sure to restart your server when you modify this file.
 
 # Version of your assets, change this if you want to expire all your assets.
-Rails.application.config.assets.version = '1.0'
+Rails.application.config.assets.version = "1.0"
 
 # Add additional assets to the asset load path.
 # Rails.application.config.assets.paths << Emoji.images_path
-# Add Yarn node_modules folder to the asset load path.
-Rails.application.config.assets.paths << Rails.root.join('node_modules')
 
 # Precompile additional assets.
 # application.js, application.css, and all non-JS/CSS in the app/assets
 # folder are already added.
-# Rails.application.config.assets.precompile += %w( admin.js admin.css )
+# Rails.application.config.assets.precompile += %w[ admin.js admin.css ]
diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index 35d0f26..b3076b3 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -1,30 +1,25 @@
 # Be sure to restart your server when you modify this file.
 
-# Define an application-wide content security policy
-# For further information see the following documentation
-# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
+# Define an application-wide content security policy.
+# See the Securing Rails Applications Guide for more information:
+# https://guides.rubyonrails.org/security.html#content-security-policy-header
 
-# Rails.application.config.content_security_policy do |policy|
-#   policy.default_src :self, :https
-#   policy.font_src    :self, :https, :data
-#   policy.img_src     :self, :https, :data
-#   policy.object_src  :none
-#   policy.script_src  :self, :https
-#   policy.style_src   :self, :https
-#   # If you are using webpack-dev-server then specify webpack-dev-server host
-#   policy.connect_src :self, :https, "http://localhost:3035", "ws://localhost:3035" if Rails.env.development?
-
-#   # Specify URI for violation reports
-#   # policy.report_uri "/csp-violation-report-endpoint"
+# Rails.application.configure do
+#   config.content_security_policy do |policy|
+#     policy.default_src :self, :https
+#     policy.font_src    :self, :https, :data
+#     policy.img_src     :self, :https, :data
+#     policy.object_src  :none
+#     policy.script_src  :self, :https
+#     policy.style_src   :self, :https
+#     # Specify URI for violation reports
+#     # policy.report_uri "/csp-violation-report-endpoint"
+#   end
+#
+#   # Generate session nonces for permitted importmap, inline scripts, and inline styles.
+#   config.content_security_policy_nonce_generator = ->(request) { request.session.id.to_s }
+#   config.content_security_policy_nonce_directives = %w(script-src style-src)
+#
+#   # Report violations without enforcing the policy.
+#   # config.content_security_policy_report_only = true
 # end
-
-# If you are using UJS then enable automatic nonce generation
-# Rails.application.config.content_security_policy_nonce_generator = -> request { SecureRandom.base64(16) }
-
-# Set the nonce only to specific directives
-# Rails.application.config.content_security_policy_nonce_directives = %w(script-src)
-
-# Report CSP violations to a specified URI
-# For further information see the following documentation:
-# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only
-# Rails.application.config.content_security_policy_report_only = true
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index 4a994e1..c010b83 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -1,4 +1,8 @@
 # Be sure to restart your server when you modify this file.
 
-# Configure sensitive parameters which will be filtered from the log file.
-Rails.application.config.filter_parameters += [:password]
+# Configure parameters to be partially matched (e.g. passw matches password) and filtered from the log file.
+# Use this to limit dissemination of sensitive information.
+# See the ActiveSupport::ParameterFilter documentation for supported notations and behaviors.
+Rails.application.config.filter_parameters += [
+  :passw, :email, :secret, :token, :_key, :crypt, :salt, :certificate, :otp, :ssn
+]
diff --git a/config/initializers/inflections.rb b/config/initializers/inflections.rb
index ac033bf..3860f65 100644
--- a/config/initializers/inflections.rb
+++ b/config/initializers/inflections.rb
@@ -4,13 +4,13 @@
 # are locale specific, and you may define rules for as many different
 # locales as you wish. All of these examples are active by default:
 # ActiveSupport::Inflector.inflections(:en) do |inflect|
-#   inflect.plural /^(ox)$/i, '\1en'
-#   inflect.singular /^(ox)en/i, '\1'
-#   inflect.irregular 'person', 'people'
+#   inflect.plural /^(ox)$/i, "\\1en"
+#   inflect.singular /^(ox)en/i, "\\1"
+#   inflect.irregular "person", "people"
 #   inflect.uncountable %w( fish sheep )
 # end
 
 # These inflection rules are supported but not enabled by default:
 # ActiveSupport::Inflector.inflections(:en) do |inflect|
-#   inflect.acronym 'RESTful'
+#   inflect.acronym "RESTful"
 # end
diff --git a/config/initializers/new_framework_defaults_5_1.rb b/config/initializers/new_framework_defaults_5_1.rb
deleted file mode 100644
index 9010abd..0000000
--- a/config/initializers/new_framework_defaults_5_1.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-# Be sure to restart your server when you modify this file.
-#
-# This file contains migration options to ease your Rails 5.1 upgrade.
-#
-# Once upgraded flip defaults one by one to migrate to the new default.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-
-# Make `form_with` generate non-remote forms.
-Rails.application.config.action_view.form_with_generates_remote_forms = false
-
-# Unknown asset fallback will return the path passed in when the given
-# asset is not present in the asset pipeline.
-# Rails.application.config.assets.unknown_asset_fallback = false
diff --git a/config/initializers/new_framework_defaults_5_2.rb b/config/initializers/new_framework_defaults_5_2.rb
deleted file mode 100644
index c383d07..0000000
--- a/config/initializers/new_framework_defaults_5_2.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-# Be sure to restart your server when you modify this file.
-#
-# This file contains migration options to ease your Rails 5.2 upgrade.
-#
-# Once upgraded flip defaults one by one to migrate to the new default.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-
-# Make Active Record use stable #cache_key alongside new #cache_version method.
-# This is needed for recyclable cache keys.
-# Rails.application.config.active_record.cache_versioning = true
-
-# Use AES-256-GCM authenticated encryption for encrypted cookies.
-# Also, embed cookie expiry in signed or encrypted cookies for increased security.
-#
-# This option is not backwards compatible with earlier Rails versions.
-# It's best enabled when your entire app is migrated and stable on 5.2.
-#
-# Existing cookies will be converted on read then written with the new scheme.
-# Rails.application.config.action_dispatch.use_authenticated_cookie_encryption = true
-
-# Use AES-256-GCM authenticated encryption as default cipher for encrypting messages
-# instead of AES-256-CBC, when use_authenticated_message_encryption is set to true.
-# Rails.application.config.active_support.use_authenticated_message_encryption = true
-
-# Add default protection from forgery to ActionController::Base instead of in
-# ApplicationController.
-# Rails.application.config.action_controller.default_protect_from_forgery = true
-
-# Store boolean values are in sqlite3 databases as 1 and 0 instead of 't' and
-# 'f' after migrating old data.
-# Rails.application.config.active_record.sqlite3.represent_boolean_as_integer = true
-
-# Use SHA-1 instead of MD5 to generate non-sensitive digests, such as the ETag header.
-# Rails.application.config.active_support.use_sha1_digests = true
-
-# Make `form_with` generate id attributes for any generated HTML tags.
-# Rails.application.config.action_view.form_with_generates_ids = true
diff --git a/config/initializers/new_framework_defaults_6_0.rb b/config/initializers/new_framework_defaults_6_0.rb
deleted file mode 100644
index 92240ef..0000000
--- a/config/initializers/new_framework_defaults_6_0.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-# Be sure to restart your server when you modify this file.
-#
-# This file contains migration options to ease your Rails 6.0 upgrade.
-#
-# Once upgraded flip defaults one by one to migrate to the new default.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-
-# Don't force requests from old versions of IE to be UTF-8 encoded.
-# Rails.application.config.action_view.default_enforce_utf8 = false
-
-# Embed purpose and expiry metadata inside signed and encrypted
-# cookies for increased security.
-#
-# This option is not backwards compatible with earlier Rails versions.
-# It's best enabled when your entire app is migrated and stable on 6.0.
-# Rails.application.config.action_dispatch.use_cookies_with_metadata = true
-
-# Change the return value of `ActionDispatch::Response#content_type` to Content-Type header without modification.
-# Rails.application.config.action_dispatch.return_only_media_type_on_content_type = false
-
-# Return false instead of self when enqueuing is aborted from a callback.
-# Rails.application.config.active_job.return_false_on_aborted_enqueue = true
-
-# Send Active Storage analysis and purge jobs to dedicated queues.
-# Rails.application.config.active_storage.queues.analysis = :active_storage_analysis
-# Rails.application.config.active_storage.queues.purge    = :active_storage_purge
-
-# When assigning to a collection of attachments declared via `has_many_attached`, replace existing
-# attachments instead of appending. Use #attach to add new attachments without replacing existing ones.
-# Rails.application.config.active_storage.replace_on_assign_to_many = true
-
-# Use ActionMailer::MailDeliveryJob for sending parameterized and normal mail.
-#
-# The default delivery jobs (ActionMailer::Parameterized::DeliveryJob, ActionMailer::DeliveryJob),
-# will be removed in Rails 6.1. This setting is not backwards compatible with earlier Rails versions.
-# If you send mail in the background, job workers need to have a copy of
-# MailDeliveryJob to ensure all delivery jobs are processed properly.
-# Make sure your entire app is migrated and stable on 6.0 before using this setting.
-# Rails.application.config.action_mailer.delivery_job = "ActionMailer::MailDeliveryJob"
-
-# Enable the same cache key to be reused when the object being cached of type
-# `ActiveRecord::Relation` changes by moving the volatile information (max updated at and count)
-# of the relation's cache key into the cache version to support recycling cache key.
-# Rails.application.config.active_record.collection_cache_versioning = true
diff --git a/config/initializers/permissions_policy.rb b/config/initializers/permissions_policy.rb
new file mode 100644
index 0000000..7db3b95
--- /dev/null
+++ b/config/initializers/permissions_policy.rb
@@ -0,0 +1,13 @@
+# Be sure to restart your server when you modify this file.
+
+# Define an application-wide HTTP permissions policy. For further
+# information see: https://developers.google.com/web/updates/2018/06/feature-policy
+
+# Rails.application.config.permissions_policy do |policy|
+#   policy.camera      :none
+#   policy.gyroscope   :none
+#   policy.microphone  :none
+#   policy.usb         :none
+#   policy.fullscreen  :self
+#   policy.payment     :self, "https://secure.example.com"
+# end
diff --git a/config/initializers/rack_attack.rb b/config/initializers/rack_attack.rb
index 553e327..4f45ec2 100644
--- a/config/initializers/rack_attack.rb
+++ b/config/initializers/rack_attack.rb
@@ -1,5 +1,5 @@
-require "net/http"
+require 'net/http'
 
-Net::HTTP.get(URI("https://lists.fissionrelays.net/tor/exits.txt")).split("\n").each do |tor_exit|
-  Rack::Attack.blocklist_ip(tor_exit)
+File.read(Rails.root.join('config', 'rack_attack_blocklist.txt')).split("\n").each do |blocked_ip|
+  Rack::Attack.blocklist_ip(blocked_ip)
 end
diff --git a/config/locales/bg.yml b/config/locales/bg.yml
index 3a03ea0..93a8443 100644
--- a/config/locales/bg.yml
+++ b/config/locales/bg.yml
@@ -1,6 +1,6 @@
 bg:
   generic:
-    title: Възможни лекции за OpenFest 2023
+    title: Възможни лекции за OpenFest 2024
     submit: Изпрати
     store_and_submit_changes: Запази локално промените и ги изпрати, ако е възможно
     help_us_reduce_the_conflicts: Помогнете ни да намалим конфликтите в програмата на OpenFest
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 59302c2..c7e7ebc 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,6 +1,6 @@
 en:
   generic:
-    title: OpenFest 2023 Talk Preference Poll
+    title: OpenFest 2024 Talk Preference Poll
     submit: Submit
     store_and_submit_changes: Store your changes locally and submit them if possible
     help_us_reduce_the_conflicts: "Help us to reduce the conflicts in OpenFest's schedule"
diff --git a/config/puma.rb b/config/puma.rb
index 1e19380..03c166f 100644
--- a/config/puma.rb
+++ b/config/puma.rb
@@ -1,56 +1,34 @@
-# Puma can serve each request in a thread from an internal thread pool.
-# The `threads` method setting takes two numbers: a minimum and maximum.
-# Any libraries that use thread pools should be configured to match
-# the maximum value specified for Puma. Default is set to 5 threads for minimum
-# and maximum; this matches the default thread size of Active Record.
+# This configuration file will be evaluated by Puma. The top-level methods that
+# are invoked here are part of Puma's configuration DSL. For more information
+# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
+
+# Puma starts a configurable number of processes (workers) and each process
+# serves each request in a thread from an internal thread pool.
 #
-threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }
+# The ideal number of threads per worker depends both on how much time the
+# application spends waiting for IO operations and on how much you wish to
+# to prioritize throughput over latency.
+#
+# As a rule of thumb, increasing the number of threads will increase how much
+# traffic a given process can handle (throughput), but due to CRuby's
+# Global VM Lock (GVL) it has diminishing returns and will degrade the
+# response time (latency) of the application.
+#
+# The default is set to 3 threads as it's deemed a decent compromise between
+# throughput and latency for the average Rails application.
+#
+# Any libraries that use a connection pool or another resource pool should
+# be configured to provide at least as many connections as the number of
+# threads. This includes Active Record's `pool` parameter in `database.yml`.
+threads_count = ENV.fetch("RAILS_MAX_THREADS", 3)
 threads threads_count, threads_count
 
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
-#
-port        ENV.fetch("PORT") { 3000 }
+port ENV.fetch("PORT", 3000)
 
-# Specifies the `environment` that Puma will run in.
-#
-environment ENV.fetch("RAILS_ENV") { "development" }
-
-# Specifies the number of `workers` to boot in clustered mode.
-# Workers are forked webserver processes. If using threads and workers together
-# the concurrency of the application would be max `threads` * `workers`.
-# Workers do not work on JRuby or Windows (both of which do not support
-# processes).
-#
-# workers ENV.fetch("WEB_CONCURRENCY") { 2 }
-
-# Use the `preload_app!` method when specifying a `workers` number.
-# This directive tells Puma to first boot the application and load code
-# before forking the application. This takes advantage of Copy On Write
-# process behavior so workers use less memory. If you use this option
-# you need to make sure to reconnect any threads in the `on_worker_boot`
-# block.
-#
-# preload_app!
-
-# If you are preloading your application and using Active Record, it's
-# recommended that you close any connections to the database before workers
-# are forked to prevent connection leakage.
-#
-# before_fork do
-#   ActiveRecord::Base.connection_pool.disconnect! if defined?(ActiveRecord)
-# end
-
-# The code in the `on_worker_boot` will be called if you are using
-# clustered mode by specifying a number of `workers`. After each worker
-# process is booted, this block will be run. If you are using the `preload_app!`
-# option, you will want to use this block to reconnect to any threads
-# or connections that may have been created at application boot, as Ruby
-# cannot share connections between processes.
-#
-# on_worker_boot do
-#   ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
-# end
-#
-
-# Allow puma to be restarted by `rails restart` command.
+# Allow puma to be restarted by `bin/rails restart` command.
 plugin :tmp_restart
+
+# Specify the PID file. Defaults to tmp/pids/server.pid in development.
+# In other environments, only set the PID file if requested.
+pidfile ENV["PIDFILE"] if ENV["PIDFILE"]
diff --git a/config/rack_attack_blocklist.txt b/config/rack_attack_blocklist.txt
new file mode 100644
index 0000000..a910af7
--- /dev/null
+++ b/config/rack_attack_blocklist.txt
@@ -0,0 +1,1873 @@
+2a0a:4cc0:0:99:c44b:7eff:fe23:de3d
+2a0a:4cc0:1:101:a463:1eff:fee1:4874
+2a0a:4cc0:3:c6:887f:3dff:feab:e676
+2a0a:3840:1337:125:0:b9c1:7d57:1337
+2a0b:f4c0:16c:1::1
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diff --git a/db/migrate/20161005112915_create_selected_talks.rb b/db/migrate/20161005112915_create_selected_talks.rb
index de9d2e5..1a7c2cb 100644
--- a/db/migrate/20161005112915_create_selected_talks.rb
+++ b/db/migrate/20161005112915_create_selected_talks.rb
@@ -1,6 +1,6 @@
 class TalkPreference < ActiveRecord::Base
   self.primary_key = :unique_id
-  serialize :talks, Array
+  serialize :talks, type: Array, coder: JSON
 end
 
 class SelectedTalk < ApplicationRecord
diff --git a/db/migrate/20161005115007_remove_talks_from_talk_preferences.rb b/db/migrate/20161005115007_remove_talks_from_talk_preferences.rb
index b144427..87f2b6c 100644
--- a/db/migrate/20161005115007_remove_talks_from_talk_preferences.rb
+++ b/db/migrate/20161005115007_remove_talks_from_talk_preferences.rb
@@ -1,7 +1,7 @@
 class TalkPreference < ActiveRecord::Base
   self.primary_key = :unique_id
   has_many :selected_talks
-  serialize :talks, Array
+  serialize :talks, type: Array, coder: JSON
 end
 
 class SelectedTalk < ApplicationRecord
diff --git a/db/migrate/20240913155424_add_service_name_to_active_storage_blobs.active_storage.rb b/db/migrate/20240913155424_add_service_name_to_active_storage_blobs.active_storage.rb
new file mode 100644
index 0000000..a15c6ce
--- /dev/null
+++ b/db/migrate/20240913155424_add_service_name_to_active_storage_blobs.active_storage.rb
@@ -0,0 +1,22 @@
+# This migration comes from active_storage (originally 20190112182829)
+class AddServiceNameToActiveStorageBlobs < ActiveRecord::Migration[6.0]
+  def up
+    return unless table_exists?(:active_storage_blobs)
+
+    unless column_exists?(:active_storage_blobs, :service_name)
+      add_column :active_storage_blobs, :service_name, :string
+
+      if configured_service = ActiveStorage::Blob.service.name
+        ActiveStorage::Blob.unscoped.update_all(service_name: configured_service)
+      end
+
+      change_column :active_storage_blobs, :service_name, :string, null: false
+    end
+  end
+
+  def down
+    return unless table_exists?(:active_storage_blobs)
+
+    remove_column :active_storage_blobs, :service_name
+  end
+end
diff --git a/db/migrate/20240913155425_create_active_storage_variant_records.active_storage.rb b/db/migrate/20240913155425_create_active_storage_variant_records.active_storage.rb
new file mode 100644
index 0000000..94ac83a
--- /dev/null
+++ b/db/migrate/20240913155425_create_active_storage_variant_records.active_storage.rb
@@ -0,0 +1,27 @@
+# This migration comes from active_storage (originally 20191206030411)
+class CreateActiveStorageVariantRecords < ActiveRecord::Migration[6.0]
+  def change
+    return unless table_exists?(:active_storage_blobs)
+
+    # Use Active Record's configured type for primary key
+    create_table :active_storage_variant_records, id: primary_key_type, if_not_exists: true do |t|
+      t.belongs_to :blob, null: false, index: false, type: blobs_primary_key_type
+      t.string :variation_digest, null: false
+
+      t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+  end
+
+  private
+    def primary_key_type
+      config = Rails.configuration.generators
+      config.options[config.orm][:primary_key_type] || :primary_key
+    end
+
+    def blobs_primary_key_type
+      pkey_name = connection.primary_key(:active_storage_blobs)
+      pkey_column = connection.columns(:active_storage_blobs).find { |c| c.name == pkey_name }
+      pkey_column.bigint? ? :bigint : pkey_column.type
+    end
+end
diff --git a/db/migrate/20240913155426_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb b/db/migrate/20240913155426_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb
new file mode 100644
index 0000000..93c8b85
--- /dev/null
+++ b/db/migrate/20240913155426_remove_not_null_on_active_storage_blobs_checksum.active_storage.rb
@@ -0,0 +1,8 @@
+# This migration comes from active_storage (originally 20211119233751)
+class RemoveNotNullOnActiveStorageBlobsChecksum < ActiveRecord::Migration[6.0]
+  def change
+    return unless table_exists?(:active_storage_blobs)
+
+    change_column_null(:active_storage_blobs, :checksum, true)
+  end
+end
diff --git a/public/404.html b/public/404.html
index b612547..2be3af2 100644
--- a/public/404.html
+++ b/public/404.html
@@ -4,7 +4,7 @@
   <title>The page you were looking for doesn't exist (404)</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
-  body {
+  .rails-default-error-page {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
@@ -12,13 +12,13 @@
     margin: 0;
   }
 
-  div.dialog {
+  .rails-default-error-page div.dialog {
     width: 95%;
     max-width: 33em;
     margin: 4em auto 0;
   }
 
-  div.dialog > div {
+  .rails-default-error-page div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -31,13 +31,13 @@
     box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
-  h1 {
+  .rails-default-error-page h1 {
     font-size: 100%;
     color: #730E15;
     line-height: 1.5em;
   }
 
-  div.dialog > p {
+  .rails-default-error-page div.dialog > p {
     margin: 0 0 1em;
     padding: 1em;
     background-color: #F7F7F7;
@@ -54,7 +54,7 @@
   </style>
 </head>
 
-<body>
+<body class="rails-default-error-page">
   <!-- This file lives in public/404.html -->
   <div class="dialog">
     <div>
diff --git a/public/406-unsupported-browser.html b/public/406-unsupported-browser.html
new file mode 100644
index 0000000..7cf1e16
--- /dev/null
+++ b/public/406-unsupported-browser.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Your browser is not supported (406)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/406-unsupported-browser.html -->
+  <div class="dialog">
+    <div>
+      <h1>Your browser is not supported.</h1>
+      <p>Please upgrade your browser to continue.</p>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/public/422.html b/public/422.html
index a21f82b..c08eac0 100644
--- a/public/422.html
+++ b/public/422.html
@@ -4,7 +4,7 @@
   <title>The change you wanted was rejected (422)</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
-  body {
+  .rails-default-error-page {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
@@ -12,13 +12,13 @@
     margin: 0;
   }
 
-  div.dialog {
+  .rails-default-error-page div.dialog {
     width: 95%;
     max-width: 33em;
     margin: 4em auto 0;
   }
 
-  div.dialog > div {
+  .rails-default-error-page div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -31,13 +31,13 @@
     box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
-  h1 {
+  .rails-default-error-page h1 {
     font-size: 100%;
     color: #730E15;
     line-height: 1.5em;
   }
 
-  div.dialog > p {
+  .rails-default-error-page div.dialog > p {
     margin: 0 0 1em;
     padding: 1em;
     background-color: #F7F7F7;
@@ -54,7 +54,7 @@
   </style>
 </head>
 
-<body>
+<body class="rails-default-error-page">
   <!-- This file lives in public/422.html -->
   <div class="dialog">
     <div>
diff --git a/public/500.html b/public/500.html
index 061abc5..78a030a 100644
--- a/public/500.html
+++ b/public/500.html
@@ -4,7 +4,7 @@
   <title>We're sorry, but something went wrong (500)</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
-  body {
+  .rails-default-error-page {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
@@ -12,13 +12,13 @@
     margin: 0;
   }
 
-  div.dialog {
+  .rails-default-error-page div.dialog {
     width: 95%;
     max-width: 33em;
     margin: 4em auto 0;
   }
 
-  div.dialog > div {
+  .rails-default-error-page div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -31,13 +31,13 @@
     box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
-  h1 {
+  .rails-default-error-page h1 {
     font-size: 100%;
     color: #730E15;
     line-height: 1.5em;
   }
 
-  div.dialog > p {
+  .rails-default-error-page div.dialog > p {
     margin: 0 0 1em;
     padding: 1em;
     background-color: #F7F7F7;
@@ -54,7 +54,7 @@
   </style>
 </head>
 
-<body>
+<body class="rails-default-error-page">
   <!-- This file lives in public/500.html -->
   <div class="dialog">
     <div>
diff --git a/public/robots.txt b/public/robots.txt
index 3c9c7c0..c19f78a 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -1,5 +1 @@
-# See http://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
-#
-# To ban all spiders from the entire site uncomment the next two lines:
-# User-agent: *
-# Disallow: /
+# See https://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
diff --git a/storage/.keep b/storage/.keep
new file mode 100644
index 0000000..e69de29