diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2ac327..0d588e2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Changelog
 All changes to the project will be documented in this file.
 
+## 4.40.0 - 22 Oct 2023
+- Drop Java 8 support
+- Improve git push performance
+- Show activities of all visible repositories as news feed
+- Support custom fields of issues and pull requests in search condition
+- Configurable default branch name
+
 ## 4.39.0 - 29 Apr 2023
 - Support enum type in custom fields of Issues and Pull requests
 - Hide large diffs by default
diff --git a/README.md b/README.md
index 6d6fc4e..c63347d 100644
--- a/README.md
+++ b/README.md
@@ -59,12 +59,13 @@
 - If you can't find same question and report, send it to our [Gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
 - The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles.
 
-What's New in 4.39.x
+What's New in 4.40.x
 -------------
-## 4.39.0 - 29 Apr 2023
-- Support enum type in custom fields of Issues and Pull requests
-- Hide large diffs by default
-- Add new options to make it possible to run GitBucket using multiple machines
-- Fix many API issues
+## 4.40.0 - 22 Oct 2023
+- Drop Java 8 support
+- Improve git push performance
+- Show activities of all visible repositories as news feed
+- Support custom fields of issues and pull requests in search condition
+- Configurable default branch name
 
 See the [change log](CHANGELOG.md) for all of the updates.
diff --git a/build.sbt b/build.sbt
index d49ba23..2520a8b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -3,7 +3,7 @@
 
 val Organization = "io.github.gitbucket"
 val Name = "gitbucket"
-val GitBucketVersion = "4.40.0-SNAPSHOT"
+val GitBucketVersion = "4.40.0"
 val ScalatraVersion = "3.0.0"
 val JettyVersion = "10.0.17"
 val JgitVersion = "6.7.0.202309050840-r"
diff --git a/src/main/scala/gitbucket/core/GitBucketCoreModule.scala b/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
index 74f7159..5a928f4 100644
--- a/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
+++ b/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
@@ -117,4 +117,5 @@
       new Version("4.38.3"),
       new Version("4.38.4"),
       new Version("4.39.0", new LiquibaseMigration("update/gitbucket-core_4.39.xml")),
+      new Version("4.40.0")
     )