diff --git a/Gemfile b/Gemfile
index 2906dd9..ca6e42f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ end
 source 'https://rubygems.org' do
   gem 'bundler', '>= 1.8.4'
 
-  # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+  # Bundle edge Rails instead: gem 'rails', '~> 4.2.5.1', github: 'rails/rails'
   gem 'rails', '4.2.5'
 
   gem 'puma'
diff --git a/Gemfile.lock b/Gemfile.lock
index a134c27..0395a05 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,7 +57,7 @@ GEM
     builder (3.2.2)
     byebug (8.2.2)
     coderay (1.1.1)
-    concurrent-ruby (1.0.0)
+    concurrent-ruby (1.0.1)
     daemons (1.2.3)
     dalli (2.7.6)
     debug_inspector (0.0.2)
@@ -198,7 +198,7 @@ GEM
     sprockets (3.5.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.0.1)
+    sprockets-rails (3.0.3)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)