diff --git a/composer.json b/composer.json
index a280b88..c3b3f0b 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "keywords": ["PHP","Excel","OpenXML","xlsx","xls","spreadsheet"],
     "homepage": "http://phpexcel.codeplex.com",
     "type": "library",
-    "license": "LGPL",
+    "license": "LGPL-2.1",
     "authors": [
         {
             "name": "Maarten Balliauw",