diff --git a/active_model_serializers.gemspec b/active_model_serializers.gemspec
index 81bbe615..42cf876d 100644
--- a/active_model_serializers.gemspec
+++ b/active_model_serializers.gemspec
@@ -11,9 +11,8 @@ Gem::Specification.new do |gem|
   gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   gem.name          = "active_model_serializers"
   gem.require_paths = ["lib"]
-  gem.version       = "0.0.1"
+  gem.version       = "0.1.0"
 
   gem.add_dependency 'activemodel', '~> 3.0'
-
   gem.add_development_dependency "rails", "~> 3.0"
 end
diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index 031fc2eb..9f7c7878 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -1,7 +1,5 @@
 require "active_support/core_ext/class/attribute"
-require "active_support/core_ext/string/inflections"
 require "active_support/core_ext/module/anonymous"
-require "set"
 
 module ActiveModel
   # Active Model Array Serializer
diff --git a/lib/active_model_serializers.rb b/lib/active_model_serializers.rb
index b6248b37..c13e14a2 100644
--- a/lib/active_model_serializers.rb
+++ b/lib/active_model_serializers.rb
@@ -1,3 +1,5 @@
+require "active_support"
+require "active_support/core_ext/string/inflections"
 require "active_model"
 require "active_model/serializer"