diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27e5e8c..70648f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # master (unreleased)
 
+## v0.4.0
+
+* [#13](https://github.com/rubocop/rubocop-extension-generator/pull/13): Fix an `ArgumentError` when RuboCop 1.22.0 or higher.
+
 ## v0.3.0
 
 * [#8](https://github.com/rubocop/rubocop-extension-generator/pull/8): Enable to work "Exclude" in AllCops section.
diff --git a/lib/rubocop/extension/generator/version.rb b/lib/rubocop/extension/generator/version.rb
index 734ff26..1681616 100644
--- a/lib/rubocop/extension/generator/version.rb
+++ b/lib/rubocop/extension/generator/version.rb
@@ -1,7 +1,7 @@
 module RuboCop
   module Extension
     module Generator
-      VERSION = "0.3.0"
+      VERSION = "0.4.0"
     end
   end
 end