diff --git a/README.md b/README.md
index 7961c34..4039f0e 100644
--- a/README.md
+++ b/README.md
@@ -14,12 +14,13 @@ Server mode is faster than client mode, but server mode is tradeoff other subtas
 
 ## Compatibility
 
-Redmine 3.2 or 3.3 or 3.4 stable
+Redmine 3.2 or 3.3 or 3.4 or 4.0 stable
 
 Tested on:
 * 3.2.9
 * 3.3.6
-* 3.4.4
+* 3.4.8
+* 4.0.1
 
 ## Installation
 
diff --git a/init.rb b/init.rb
index b3e6928..1efc84e 100644
--- a/init.rb
+++ b/init.rb
@@ -17,7 +17,7 @@
   name 'Redmine Subtask List Accordion plugin'
   author 'Ryuta Tobita'
   description 'This plugin provide accordion to subtask list of issue.'
-  version '2.1.1'
+  version '2.2.0'
   url 'https://github.com/GEROMAX/redmine_subtask_list_accordion'
   author_url 'https://github.com/GEROMAX'
   settings default: { 'enable_server_scripting_mode' => true }, :partial => 'settings/subtask_list_accordion_settings'