diff --git a/composer.json b/composer.json
index df6faed..be44a78 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
     "include-path": [
         "./"
     ],
-    "license": "LGPL",
+    "license": "LGPL-2.1-or-later",
     "minimum-stability": "dev",
     "prefer-stable": true,
     "name": "pear/spreadsheet_excel_writer",