diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index 9b8a9b6..e650127 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -72,7 +72,8 @@ GEM
     multi_json (1.11.2)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
-    rack (1.6.4)
+    pg (1.4.5)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.4)
@@ -94,6 +95,11 @@ GEM
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.2)
       loofah (~> 2.0)
+    rails_12factor (0.0.3)
+      rails_serve_static_assets
+      rails_stdout_logging
+    rails_serve_static_assets (0.0.5)
+    rails_stdout_logging (0.0.5)
     railties (4.2.4)
       actionpack (= 4.2.4)
       activesupport (= 4.2.4)
@@ -143,7 +149,9 @@ DEPENDENCIES
   coffee-rails (~> 4.1.0)
   jbuilder (~> 2.0)
   jquery-rails
+  pg
   rails (= 4.2.4)
+  rails_12factor
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)
   spring