diff --git a/Gemfile b/Gemfile
index 6e810339..00cd24d9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,3 +6,5 @@ gemspec
 gem 'sqlite3'
 gem 'coveralls', :require => false
 gem 'simplecov', :require => false
+
+gem 'rails', "~> 4.0.0"
diff --git a/Gemfile.rails3 b/Gemfile.rails3
new file mode 100644
index 00000000..7afd0941
--- /dev/null
+++ b/Gemfile.rails3
@@ -0,0 +1,10 @@
+source 'https://rubygems.org'
+
+# Specify gem dependencies in active_model_serializers.gemspec
+gemspec
+
+gem 'sqlite3'
+gem 'coveralls', :require => false
+gem 'simplecov', :require => false
+
+gem 'rails', "~> 3.2.15"