diff --git a/README.md b/README.md
index 99f2948..987eef7 100644
--- a/README.md
+++ b/README.md
@@ -24,3 +24,5 @@ The basic concept of this library was inspired by the [EPICS](https://github.com
 ## Copyright
 
 Copyright: eCollect AG, 2018-9.
+Licensed under the [GPLv3](LICENSE) license.
+
diff --git a/package.json b/package.json
index cf40c9e..6d60889 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
 			"url": "https://github.com/yagop"
 		}
 	],
-	"license": "MIT",
+	"license": "GPLv3",
 	"dependencies": {
 		"bn.js": "^5.0.0",
 		"handlebars": "^4.4.3",