diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6b456e1af2597b128c74898143220708f9bac83..1f3c6a08166fa514c566b7d3cdd1d8a1b694c809 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,25 @@
 
-## 2024-01-22 
+## [3.55.1] - 2024-01-22
 
-- fix exception [#132](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/132)
-- add catch for exception [#133](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/133)
+### Bug Fixes
+
+- catch errors  [#133](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/133)
+- catch errors  [#133](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/133)
+- check parameter  [#132](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/132)
+### Changes
+
+- doc
+- lint + formatt
+- update nixos to 23-11
 
 ## [3.55.0] - 2023-11-29
 
 ### Add Features
 
 - various changes [#131](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/131)
+### Changes
+
+- release and publish to npm new version 3.55.0
 
 ## [3.54.0] - 2023-11-23
 
diff --git a/package.json b/package.json
index 4675d18fb014a3bef1bd444a6b3c8788c33f63d1..f32a1c21b7af355405c9f05d6660932c25da5cb3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@schukai/monster",
-  "version": "3.55.0",
+  "version": "3.55.1",
   "description": "Monster is a simple library for creating fast, robust and lightweight websites.",
   "keywords": [
     "framework",
diff --git a/source/types/version.mjs b/source/types/version.mjs
index 0c68c4de22f9a525d61f60ae796b0cbc53ef0b39..fe1b2eb71ae2c4c4277967077a099c10d9d00f30 100644
--- a/source/types/version.mjs
+++ b/source/types/version.mjs
@@ -152,7 +152,7 @@ function getMonsterVersion() {
 	}
 
 	/** don't touch, replaced by make with package.json version */
-	monsterVersion = new Version("3.55.0");
+	monsterVersion = new Version("3.55.1");
 
 	return monsterVersion;
 }
diff --git a/test/cases/monster.mjs b/test/cases/monster.mjs
index 3fe4edc3f14ab9dc378bac8f6da2ee4c035798db..7670d6961afb3d784b4aadd319cb28f873ff5d67 100644
--- a/test/cases/monster.mjs
+++ b/test/cases/monster.mjs
@@ -7,7 +7,7 @@ describe('Monster', function () {
         let monsterVersion
 
         /** don´t touch, replaced by make with package.json version */
-        monsterVersion = new Version("3.55.0")
+        monsterVersion = new Version("3.55.1")
 
         let m = getMonsterVersion();