diff --git a/superintendent.gemspec b/superintendent.gemspec
index c4d9781..1899fe6 100644
--- a/superintendent.gemspec
+++ b/superintendent.gemspec
@@ -19,8 +19,8 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency 'rack', '>= 2.0.0.alpha', '< 3.0'
   spec.add_runtime_dependency 'json-schema', '~> 2.5'
-  spec.add_runtime_dependency 'activesupport', '>= 5.0.0.beta1', '< 5.1'
-  spec.add_runtime_dependency 'actionpack', '>= 5.0.0.beta1', '< 5.1'
+  spec.add_runtime_dependency 'activesupport', '>= 5.0.0.beta1', '< 5.2'
+  spec.add_runtime_dependency 'actionpack', '>= 5.0.0.beta1', '< 5.2'
 
   spec.add_development_dependency 'bundler', '~> 1.10'
   spec.add_development_dependency "rake", '>= 10.4', '< 12.0'