diff --git a/build.gradle b/build.gradle
index 4da140b78..f59874491 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,3 +1,14 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
 /*
  * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *
diff --git a/gradle.properties b/gradle.properties
index ad7df3e58..6a91538ac 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,13 @@
+# SPDX-License-Identifier: Apache-2.0
+#
+# The OpenSearch Contributors require contributions made to
+# this file be licensed under the Apache-2.0 license or a
+# compatible open source license.
+#
+# Modifications Copyright OpenSearch Contributors. See
+# GitHub history for details.
+#
+
 #
 #   Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 #
diff --git a/settings.gradle b/settings.gradle
index e60165a0a..2cc090918 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,3 +1,14 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ *
+ * Modifications Copyright OpenSearch Contributors. See
+ * GitHub history for details.
+ */
+
 /*
  * Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *