diff --git a/composer.json b/composer.json
index 171ac0372..360ced478 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "description": "PHP Client for Elasticsearch",
   "keywords": ["search","client", "elasticsearch"],
   "type": "library",
-  "license": "Apache 2",
+  "license": "Apache-2.0",
   "authors": [
     {
       "name": "Zachary Tong"