diff --git a/composer.json b/composer.json
index e29ceec..e052083 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,7 @@
 {
   "name": "romulodl/ema",
   "description": "EMA without the PECL trader extension",
+  "license": "Apache-2.0",
   "require-dev": {
     "phpunit/phpunit": "^8.5"
   },