diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cfcbc48..d3291ee0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ This project employs a versioning scheme described in [RELEASE.md](RELEASE.md#ve
 
 ## [Unreleased]
 
+## [1.28.4]
+
 ### Changed
 
 - Update etcd image to 3.5.14.1 [#742](https://github.com/cybozu-go/cke/pull/742)
diff --git a/version.go b/version.go
index d6dadf71..5adb9f73 100644
--- a/version.go
+++ b/version.go
@@ -1,7 +1,7 @@
 package cke
 
 // Version represents current cke version
-const Version = "1.28.3"
+const Version = "1.28.4"
 
 // ConfigVersion represents the current configuration scheme
 // of how CKE constructs its Kubernetes cluster.