diff --git a/Gemfile b/Gemfile
index 04f91fe..6d3f494 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,4 +22,7 @@ group :development do
   gem 'capistrano3-puma'
 end
 
-gem 'puma', group: :production
+group :production do
+  gem 'puma'
+  gem 'pg'
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index 6c6bf21..0d64a4f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,6 +94,7 @@ GEM
     net-ssh (3.0.1)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
+    pg (0.18.3)
     pry (0.10.2)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
@@ -171,6 +172,7 @@ DEPENDENCIES
   coffee-rails
   jbuilder
   jquery-rails
+  pg
   pry-rails
   puma
   rails (= 4.2.4)