diff --git a/composer.json b/composer.json
index 9efe40f..454e079 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "keywords": ["mail","roundcube","security","captcha"],
     "homepage": "https://github.com/dsoares/roundcube-rcguard",
     "version": "1.3.0",
-    "license": "GPLv3+",
+    "license": "GPL-3.0+",
     "authors": [
         {
             "name": "Denny Lin",