diff --git a/additional_tags.gemspec b/additional_tags.gemspec
index c70ccba..1e8d980 100644
--- a/additional_tags.gemspec
+++ b/additional_tags.gemspec
@@ -22,6 +22,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
   spec.required_ruby_version = '>= 3.0'
 
-  spec.add_runtime_dependency 'acts-as-taggable-on', '~> 9.0'
+  spec.add_runtime_dependency 'acts-as-taggable-on', '~> 10.0'
   spec.add_runtime_dependency 'redmine_plugin_kit'
 end