diff --git a/extension.json b/extension.json
index 23a3c5b..9a00606 100644
--- a/extension.json
+++ b/extension.json
@@ -9,6 +9,7 @@
 	],
 	"url": "https://www.mediawiki.org/wiki/Extension:Math",
 	"descriptionmsg": "math-desc",
+	"license-name": "GPL-2.0+",
 	"callback": "MathHooks::registerExtension",
 	"type": "parserhook",
 	"AutoloadClasses": {