diff --git a/grape-active_model_serializers.gemspec b/grape-active_model_serializers.gemspec
index 5a7d101..d2c782f 100644
--- a/grape-active_model_serializers.gemspec
+++ b/grape-active_model_serializers.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency "grape", "~> 0.3"
   gem.add_dependency "active_model_serializers", ">= 0.8.1"
 
-  gem.add_development_dependency "rspec", "~> 2.12.0"
+  gem.add_development_dependency "rspec"
   gem.add_development_dependency "rack-test"
   gem.add_development_dependency "rake"
   gem.add_development_dependency "jazz_hands"