diff --git a/CHANGELOG.md b/CHANGELOG.md
index aef3af1..d5a01e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,13 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
-#### [v12.0.0](https://github.com/lokalise/node-core/compare/v11.2.0...v12.0.0)
+#### [v12.1.0](https://github.com/lokalise/node-core/compare/v12.0.0...v12.1.0)
+
+- Adding wasSuccessful param to TransactionObservabilityManager [`#155`](https://github.com/lokalise/node-core/pull/155)
+
+### [v12.0.0](https://github.com/lokalise/node-core/compare/v11.2.0...v12.0.0)
+
+> 14 August 2024
 
 - update errors cause param type [`#150`](https://github.com/lokalise/node-core/pull/150)
 
diff --git a/package.json b/package.json
index 193ea8a..51459d6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@lokalise/node-core",
-    "version": "12.0.0",
+    "version": "12.1.0",
     "author": {
         "name": "Lokalise",
         "url": "https://lokalise.com/"
@@ -11,7 +11,11 @@
         "url": "git://github.com/lokalise/node-core.git"
     },
     "license": "Apache-2.0",
-    "files": ["dist/**", "LICENSE", "README.md"],
+    "files": [
+        "dist/**",
+        "LICENSE",
+        "README.md"
+    ],
     "main": "dist/index.js",
     "types": "dist/index.d.ts",
     "type": "commonjs",