diff --git a/Gemfile.lock b/Gemfile.lock
index b46a29c..a7bf071 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,6 +2,7 @@ PATH
   remote: .
   specs:
     grape-active_model_serializers (0.1.0)
+      active_model_serializers (~> 0.8.0)
       grape (~> 0.3)
 
 GEM
@@ -66,7 +67,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  active_model_serializers
   activerecord
   activerecord-nulldb-adapter
   grape-active_model_serializers!
diff --git a/grape-active_model_serializers.gemspec b/grape-active_model_serializers.gemspec
index b5ab1bb..a7d216c 100644
--- a/grape-active_model_serializers.gemspec
+++ b/grape-active_model_serializers.gemspec
@@ -16,9 +16,9 @@ Gem::Specification.new do |gem|
   gem.version       = Grape::ActiveModelSerializers::VERSION
 
   gem.add_dependency "grape", "~> 0.3"
+  gem.add_dependency "active_model_serializers", "~> 0.8.0"
 
   gem.add_development_dependency "activerecord"
-  gem.add_development_dependency "active_model_serializers"
   gem.add_development_dependency "rspec", "~> 2.12.0"
   gem.add_development_dependency "rack-test"
   gem.add_development_dependency "rake"