diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..9dd7cf3
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Changelog
+
+## 1.3.0
+
+Copyright function: carry previous creation date to prevent unnecessary modifications
+
+## 1.2.0
+
+- Fully interactive snippets
+- db migration generator removed (new snipped in development)
+
+## 1.1.0
+
+Knex database migration generator
+
+## 1.0.0
+
+initial version
diff --git a/Jenkinsfile b/Jenkinsfile
index c4cfc1d..757da78 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -5,7 +5,7 @@ pipeline {
         VERSION = VersionNumber([
             versionNumberString:
                 '${BUILDS_ALL_TIME}',
-            versionPrefix: '1.2.',
+            versionPrefix: '1.3.',
             worstResultForIncrement: 'SUCCESS'
         ])
     }
diff --git a/README.md b/README.md
index aa38aa0..3ce4ea4 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # @sapphirecode/snippeteer
 
-version: 1.2.x
+version: 1.3.x
 
 macros for setting up projects or project parts
 
diff --git a/jenkins.js b/jenkins.js
index 865de5a..e1d7647 100644
--- a/jenkins.js
+++ b/jenkins.js
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) SapphireCode - All Rights Reserved
+ * This file is part of Snippeteer which is released under BSD-3-Clause.
+ * See file 'LICENSE' for full license details.
+ * Created by Timo Hocker <timo@scode.ovh>, June 2020
+ */
+
 'use strict';
 
 const https = require ('https');
diff --git a/lib/snippets/readme/Assets.ts b/lib/snippets/readme/Assets.ts
index 5af6c77..d03ba55 100644
--- a/lib/snippets/readme/Assets.ts
+++ b/lib/snippets/readme/Assets.ts
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) SapphireCode - All Rights Reserved
+ * This file is part of Snippeteer which is released under BSD-3-Clause.
+ * See file 'LICENSE' for full license details.
+ * Created by Timo Hocker <timo@scode.ovh>, June 2020
+ */
+
 /* eslint-disable max-len */
 export function get_readme (
   software: string,
diff --git a/lib/snippets/readme/index.ts b/lib/snippets/readme/index.ts
index 217ccc3..5f70aa0 100644
--- a/lib/snippets/readme/index.ts
+++ b/lib/snippets/readme/index.ts
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) SapphireCode - All Rights Reserved
+ * This file is part of Snippeteer which is released under BSD-3-Clause.
+ * See file 'LICENSE' for full license details.
+ * Created by Timo Hocker <timo@scode.ovh>, June 2020
+ */
+
 import { Confirm } from 'enquirer';
 import { Snippet } from '../../Snippet';
 import { modify_json, apply_template } from '../../Helper';
diff --git a/package.json b/package.json
index cc8d8b0..6491c6d 100644
--- a/package.json
+++ b/package.json
@@ -39,4 +39,4 @@
   "engines": {
     "node": ">=10.0.0"
   }
-}
+}
\ No newline at end of file