diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0380bcb..119781e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 ## Unreleased
-- Change ci platform to Github Actions
+
+## 0.40.0
+- Change ci platform to Github Actions.
+- Fix regular expressions to detect group id(url_name) for group mention.
 
 ## 0.39.0
 - Fix an error when custom block type is empty
diff --git a/lib/qiita/markdown/filters/group_mention.rb b/lib/qiita/markdown/filters/group_mention.rb
index 0c0eb2e..c9cc04f 100644
--- a/lib/qiita/markdown/filters/group_mention.rb
+++ b/lib/qiita/markdown/filters/group_mention.rb
@@ -22,7 +22,7 @@ class MentionableNode
             (?:^|\W)
             @((?>[a-z\d][a-z\d-]{2,31}))
             \/
-            ([A-Za-z\d][A-Za-z\d-]{0,14}[A-Za-z\d])
+            ([A-Za-z\d][A-Za-z\d-]{0,62}[A-Za-z\d])
             (?!\/)
             (?=
               \.+[ \t\W]|
diff --git a/lib/qiita/markdown/version.rb b/lib/qiita/markdown/version.rb
index 464b769..6eb9bae 100644
--- a/lib/qiita/markdown/version.rb
+++ b/lib/qiita/markdown/version.rb
@@ -1,5 +1,5 @@
 module Qiita
   module Markdown
-    VERSION = "0.39.0"
+    VERSION = "0.40.0"
   end
 end