diff --git a/the_moderator.gemspec b/the_moderator.gemspec
index b62be75..cef7c7d 100644
--- a/the_moderator.gemspec
+++ b/the_moderator.gemspec
@@ -18,9 +18,9 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "activemodel", ">= 3.2.0", "< 8"
-  spec.add_dependency "activerecord", ">= 3.2.0", "< 8"
-  spec.add_dependency "activesupport", ">= 3.2.0", "< 8"
+  spec.add_dependency "activemodel", ">= 3.2.0", "< 9"
+  spec.add_dependency "activerecord", ">= 3.2.0", "< 9"
+  spec.add_dependency "activesupport", ">= 3.2.0", "< 9"
 
   spec.add_development_dependency "bundler", "~> 2.2"
   spec.add_development_dependency "rake", "~> 13.0"