diff --git a/README.md b/README.md
index e68108d..e13546e 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@
 Release Notes
 -------------
 ### 4.12 - 30 Apr 2017
-- Gist plug-in provides JavaScript to embed snippet
+- [Gist plug-in](https://github.com/gitbucket/gitbucket-gist-plugin) provides JavaScript to embed snippet
 - Dropdown menu filter in the branch comparing page
 - Caution for the embedded H2 database
 
diff --git a/doc/release.md b/doc/release.md
index 682dc88..d417cb7 100644
--- a/doc/release.md
+++ b/doc/release.md
@@ -34,8 +34,6 @@
 Generate release files
 --------
 
-Note: Release operation requires [Ant](http://ant.apache.org/) and [Maven](https://maven.apache.org/).
-
 ### Make release war file
 
 Run `sbt executable`. The release war file and fingerprint are generated into `target/executable/gitbucket.war`.
@@ -52,4 +50,12 @@
 $ sbt publish-signed
 ```
 
-Then operate release sequence at https://oss.sonatype.org/.
+Then logged-in https://oss.sonatype.org/ and delete following files from the staging repository:
+
+- gitbucket_2.12-x.x.x.war
+- gitbucket_2.12-x.x.x.war.asc
+- gitbucket_2.12-x.x.x.war.asc.md5
+- gitbucket_2.12-x.x.x.war.asc.sha1
+- gitbucket_2.12-x.x.x.war.md5
+
+At last, close and release the repository.