diff --git a/demo/configs/webpack/common.js b/demo/configs/webpack/common.js
index 8d825b1..098f668 100644
--- a/demo/configs/webpack/common.js
+++ b/demo/configs/webpack/common.js
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+
+// This source code is licensed under the license found in the
+// LICENSE file in the root directory of this source tree.
+
 const { resolve } = require("path");
 const HtmlWebpackPlugin = require("html-webpack-plugin");
 const FriendlyErrorsWebpackPlugin = require("friendly-errors-webpack-plugin");
diff --git a/demo/configs/webpack/dev.js b/demo/configs/webpack/dev.js
index 454331e..f2f5216 100644
--- a/demo/configs/webpack/dev.js
+++ b/demo/configs/webpack/dev.js
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+
+// This source code is licensed under the license found in the
+// LICENSE file in the root directory of this source tree.
+
 // development config
 const { merge } = require("webpack-merge");
 const commonConfig = require("./common");
diff --git a/demo/configs/webpack/prod.js b/demo/configs/webpack/prod.js
index ec694bb..b598f48 100644
--- a/demo/configs/webpack/prod.js
+++ b/demo/configs/webpack/prod.js
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+
+// This source code is licensed under the license found in the
+// LICENSE file in the root directory of this source tree.
+
 // production config
 const { merge } = require("webpack-merge");
 const { resolve } = require("path");
diff --git a/demo/postcss.config.js b/demo/postcss.config.js
index e55fbc3..064a2ba 100644
--- a/demo/postcss.config.js
+++ b/demo/postcss.config.js
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+
+// This source code is licensed under the license found in the
+// LICENSE file in the root directory of this source tree.
+
 const tailwindcss = require("tailwindcss");
 module.exports = {
   plugins: ["postcss-preset-env", 'tailwindcss/nesting', tailwindcss],
diff --git a/demo/tailwind.config.js b/demo/tailwind.config.js
index a251b60..e92b38b 100644
--- a/demo/tailwind.config.js
+++ b/demo/tailwind.config.js
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+
+// This source code is licensed under the license found in the
+// LICENSE file in the root directory of this source tree.
+
 /** @type {import('tailwindcss').Config} */
 module.exports = {
   content: ["./src/**/*.{html,js,tsx}"],