diff --git a/Gemfile b/Gemfile
index 6a4d9204..bc6d7817 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,5 @@
 source 'https://rubygems.org'
 
-# Specify gem dependencies in active_model_serializers.gemspec
 gemspec
 
 platforms :ruby do
diff --git a/Gemfile.edge b/Gemfile.edge
index 36c65d24..1e06dc48 100644
--- a/Gemfile.edge
+++ b/Gemfile.edge
@@ -12,7 +12,7 @@ platforms :mri do
 end
 
 platforms :jruby do
-  gem 'activerecord-jdbcsqlite3-adapter', github: 'jruby/activerecord-jdbc-adapter'
+  gem 'activerecord-jdbcsqlite3-adapter'
 end
 
 platforms :rbx do
@@ -21,8 +21,6 @@ platforms :rbx do
   gem 'racc', '~> 1.4.10'
 end
 
-# Use Rails master
+# Use Rails master + current dependencies
 gem 'rails', github: 'rails/rails'
-
-# Current dependencies of edge rails
 gem 'arel', github: 'rails/arel'
diff --git a/Gemfile.rails3 b/Gemfile.rails3
index 6484e975..d90af577 100644
--- a/Gemfile.rails3
+++ b/Gemfile.rails3
@@ -1,6 +1,5 @@
 source 'https://rubygems.org'
 
-# Specify gem dependencies in active_model_serializers.gemspec
 gemspec