diff --git a/LICENSE.md b/LICENSE.md
index 319b5cd572..690dc0bff0 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -4,13 +4,7 @@ Software License Agreement
 **CKEditor 5 classic editor build** – https://github.com/ckeditor/ckeditor5-build-classic <br>
 Copyright (c) 2003-2018, [CKSource](http://cksource.com) Frederico Knabben. All rights reserved.
 
-Licensed under the terms of any of the following licenses at your choice:
-
-* [GNU General Public License Version 2 or later (the "GPL")](http://www.gnu.org/licenses/gpl.html)
-* [GNU Lesser General Public License Version 2.1 or later (the "LGPL")](http://www.gnu.org/licenses/lgpl.html)
-* [Mozilla Public License Version 1.1 or later (the "MPL")](http://www.mozilla.org/MPL/MPL-1.1.html)
-
-You are not required to, but if you want to explicitly declare the license you have chosen to be bound to when using, reproducing, modifying and distributing this software, just include a text file titled "legal.txt" in your version of this software, indicating your license choice. In any case, your choice will not restrict any recipient of your version of this software to use, reproduce, modify and distribute this software under any of the above licenses.
+Licensed under the terms of [GNU General Public License Version 2 or later](http://www.gnu.org/licenses/gpl.html).
 
 Sources of Intellectual Property Included in CKEditor
 -----------------------------------------------------
diff --git a/README.md b/README.md
index b4fd7b75eb..a959d13e57 100644
--- a/README.md
+++ b/README.md
@@ -66,4 +66,4 @@ ClassicEditor
 
 ## License
 
-Licensed under the GPL, LGPL and MPL licenses, at your choice. For full details about the license, please check the `LICENSE.md` file.
+Licensed under the terms of [GNU General Public License Version 2 or later](http://www.gnu.org/licenses/gpl.html). For full details about the license, please check the `LICENSE.md` file.
diff --git a/package.json b/package.json
index 8c8c4a2961..10e33b7a9f 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "npm": ">=3.0.0"
   },
   "author": "CKSource (http://cksource.com/)",
-  "license": "(GPL-2.0 OR LGPL-2.1 OR MPL-1.1)",
+  "license": "GPL-2.0-or-later",
   "homepage": "https://ckeditor.com",
   "bugs": "https://github.com/ckeditor/ckeditor5-build-classic/issues",
   "repository": {