diff --git a/internal/bytesconv/bytesconv.go b/internal/bytesconv/bytesconv.go
index 32c2b59..7b80e33 100644
--- a/internal/bytesconv/bytesconv.go
+++ b/internal/bytesconv/bytesconv.go
@@ -1,3 +1,7 @@
+// Copyright 2020 Gin Core Team. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package bytesconv
 
 import (
diff --git a/internal/bytesconv/bytesconv_test.go b/internal/bytesconv/bytesconv_test.go
index ee2c8ab..eeaad5e 100644
--- a/internal/bytesconv/bytesconv_test.go
+++ b/internal/bytesconv/bytesconv_test.go
@@ -1,3 +1,7 @@
+// Copyright 2020 Gin Core Team. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package bytesconv
 
 import (