diff --git a/Gemfile b/Gemfile
index 9d29d94b..f7c1e112 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,6 +11,5 @@ platforms :jruby do
   gem "activerecord-jdbcsqlite3-adapter"
 end
 
-gem "rails", "> 5.x"
+gem "rails", "~> 5.0"
 gem "mongoid", github: "mongodb/mongoid"
-gem "minitest-rails", github: "blowmage/minitest-rails"
diff --git a/draper.gemspec b/draper.gemspec
index 8adf8f4e..cbcfc6ce 100644
--- a/draper.gemspec
+++ b/draper.gemspec
@@ -19,10 +19,10 @@ Gem::Specification.new do |s|
 
   s.required_ruby_version = '>= 2.2.2'
 
-  s.add_dependency 'activesupport', '> 5.x'
-  s.add_dependency 'actionpack', '> 5.x'
+  s.add_dependency 'activesupport', '~> 5.0'
+  s.add_dependency 'actionpack', '~> 5.0'
   s.add_dependency 'request_store', '~> 1.0'
-  s.add_dependency 'activemodel', '> 5.x'
+  s.add_dependency 'activemodel', '~> 5.0'
   s.add_dependency 'activemodel-serializers-xml'
 
   s.add_development_dependency 'ammeter'