Remove the extra comma
diff --git a/examples/php/composer.json b/examples/php/composer.json
index 97e9608..e6409f8 100644
--- a/examples/php/composer.json
+++ b/examples/php/composer.json
@@ -2,6 +2,6 @@
   "name": "grpc/grpc-demo",
   "description": "gRPC example for PHP",
   "require": {
-    "grpc/grpc": "v1.0.0",
+    "grpc/grpc": "v1.0.0"
   }
 }