diff --git a/packages/docusaurus-plugin-content-blog/assets/atom.xsl b/packages/docusaurus-plugin-content-blog/assets/atom.xsl
index b4b2d9619c0d..6480de3ff658 100644
--- a/packages/docusaurus-plugin-content-blog/assets/atom.xsl
+++ b/packages/docusaurus-plugin-content-blog/assets/atom.xsl
@@ -1,4 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+Copyright (c) Facebook, Inc. and its affiliates.
+
+This source code is licensed under the MIT license found in the
+LICENSE file in the root directory of this source tree.
+-->
 <xsl:stylesheet
   version="3.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
diff --git a/packages/docusaurus-plugin-content-blog/assets/rss.xsl b/packages/docusaurus-plugin-content-blog/assets/rss.xsl
index e9695b298468..b06c55269c0a 100644
--- a/packages/docusaurus-plugin-content-blog/assets/rss.xsl
+++ b/packages/docusaurus-plugin-content-blog/assets/rss.xsl
@@ -1,4 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+Copyright (c) Facebook, Inc. and its affiliates.
+
+This source code is licensed under the MIT license found in the
+LICENSE file in the root directory of this source tree.
+-->
 <xsl:stylesheet
   version="3.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
diff --git a/website/profileSamply.sh b/website/profileSamply.sh
index c0bb90fe07f3..11825b66847c 100755
--- a/website/profileSamply.sh
+++ b/website/profileSamply.sh
@@ -1,5 +1,9 @@
 #!/usr/bin/env bash
 
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 
 echo "This Samply profiling script doesn't work when it's run with Yarn, but you can run it manually instead"