diff --git a/conjur-cli.gemspec b/conjur-cli.gemspec
index b7700b60..eb4b8ca2 100644
--- a/conjur-cli.gemspec
+++ b/conjur-cli.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |gem|
   # Filter out development only executables
   gem.executables -= %w{parse-changelog.sh}
 
-  gem.add_dependency 'activesupport', '>= 4.2', '< 6'
+  gem.add_dependency 'activesupport', '>= 4.2'
   gem.add_dependency 'conjur-api', '~> 5.3'
   gem.add_dependency 'deep_merge', '~> 1.0'
   gem.add_dependency 'gli', '>=2.8.0'