diff --git a/init.rb b/init.rb
index 34f24c9..2cedb2b 100644
--- a/init.rb
+++ b/init.rb
@@ -8,10 +8,10 @@ Redmine::Plugin.register :redmine_glossary do
   name 'Redmine Glossary plugin'
   author 'Toru Takahashi'
   description 'This is a plugin for Redmine to create a glossary that is a list of terms in a project.'
-  version '1.0.1'
+  version '1.1.0'
   url 'https://github.com/torutk/redmine_glossary'
   author_url 'http://www.torutk.com'
-
+  requires_redmine version_or_higher: '4.0'
 
   project_module :glossary do
     permission :view_glossary_terms, {