diff --git a/paper_trail.gemspec b/paper_trail.gemspec
index 2dd219be..16433533 100644
--- a/paper_trail.gemspec
+++ b/paper_trail.gemspec
@@ -19,8 +19,8 @@ Gem::Specification.new do |s|
 
   s.required_rubygems_version = '>= 1.3.6'
 
-  s.add_dependency 'activerecord', ['>= 3.0', '< 5.0']
-  s.add_dependency 'activesupport', ['>= 3.0', '< 5.0']
+  s.add_dependency 'activerecord', ['>= 3.0', '< 6.0']
+  s.add_dependency 'activesupport', ['>= 3.0', '< 6.0']
 
   s.add_development_dependency 'rake', '~> 10.1.1'
   s.add_development_dependency 'shoulda', '~> 3.5'