diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1afe4a..4a4bec6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# [5.4.0](https://github.com/vmihailenco/msgpack/compare/v5.3.6...v5.4.0) (2023-10-01)
+
+
+
 ## [5.3.6](https://github.com/vmihailenco/msgpack/compare/v5.3.5...v5.3.6) (2023-10-01)
 
 
diff --git a/extra/msgpappengine/go.mod b/extra/msgpappengine/go.mod
index bee72a3..edcb3ad 100644
--- a/extra/msgpappengine/go.mod
+++ b/extra/msgpappengine/go.mod
@@ -5,6 +5,6 @@ go 1.15
 replace github.com/vmihailenco/msgpack/v5 => ../..
 
 require (
-	github.com/vmihailenco/msgpack/v5 v5.3.6
+	github.com/vmihailenco/msgpack/v5 v5.4.0
 	google.golang.org/appengine v1.6.7
 )
diff --git a/package.json b/package.json
index 12a706f..ff26539 100644
--- a/package.json
+++ b/package.json
@@ -1,4 +1,4 @@
 {
   "name": "msgpack",
-  "version": "5.3.6"
+  "version": "5.4.0"
 }
diff --git a/version.go b/version.go
index 3fa2655..2420315 100644
--- a/version.go
+++ b/version.go
@@ -2,5 +2,5 @@ package msgpack
 
 // Version is the current release version.
 func Version() string {
-	return "5.3.6"
+	return "5.4.0"
 }