diff --git a/manifest.json b/manifest.json
index feeff13..58b27c1 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,7 +8,7 @@
     },
     "version":"1.7.13~ynh1",
     "url": "https://www.webtrees.net",
-    "license": "GNU",
+    "license": " GPL-3.0-or-later",
     "maintainer": {
         "name": "Anmol Sharma",
         "email": "anmol@datamol.org"