diff --git a/composer.json b/composer.json
index c78bf2e..3c05409 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     "php-http/httplug": "^1.0",
     "php-http/message": "^1.0", 
     "php-http/client-implementation": "^1.0",
-    "php-http/discovery": "^1.0",
+    "php-http/discovery": "^1.0"
   },
   "require-dev": {
     "php-http/guzzle6-adapter": "^1.0",