diff --git a/doc/auto_update.md b/doc/auto_update.md
index fcce3e0..f5c80b7 100644
--- a/doc/auto_update.md
+++ b/doc/auto_update.md
@@ -1,3 +1,5 @@
+# Automatic Schema Updating
+
 GitBucket uses H2 database to manage project and account data. GitBucket updates database schema automatically in the first run after the upgrading.
 
 To release a new version of GitBucket, add the version definition to the [servlet.AutoUpdate](https://github.com/takezoe/gitbucket/blob/master/src/main/scala/servlet/AutoUpdateListener.scala) at first.