diff --git a/src/react-app-env.d.ts b/src/react-app-env.d.ts
index 6431bc5..4698d30 100644
--- a/src/react-app-env.d.ts
+++ b/src/react-app-env.d.ts
@@ -1 +1,3 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
+
 /// <reference types="react-scripts" />