diff --git a/hack/add_license_headers.sh b/hack/add_license_headers.sh
index 389950f8..35a49a28 100755
--- a/hack/add_license_headers.sh
+++ b/hack/add_license_headers.sh
@@ -4,11 +4,26 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
+# set interactive mode to enable defining a gsed alias
+shopt -s expand_aliases
+
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then  # Linux
+    alias gsed="sed -i"
+elif [[ "$OSTYPE" == "darwin"* ]]; then  # macOS
+    alias gsed="sed -i ''"
+elif [[ "$OSTYPE" == "cygwin" ]]; then  # POSIX compatible emulation for Windows
+    alias gsed="sed -i"
+else
+    echo "FAILED. OS not compatible with script '/hack/add_license_headers.sh'"
+    exit 1
+fi
+export gsed
+
 hash_comment () {
   echo "$1"
   if ! grep -q "SPDX-License-Identifier" "$1"
   then
-    sed -i '' '1i\
+    gsed '1i\
     # Copyright 2021 The MLX Contributors\
     #\
     # SPDX-License-Identifier: Apache-2.0\
@@ -20,7 +35,7 @@ slash_comment () {
   echo "$1"
   if ! grep -q "SPDX-License-Identifier" "$1"
   then
-    sed -i '' '1i\
+    gsed '1i\
     // Copyright 2021 The MLX Contributors\
     //\
     // SPDX-License-Identifier: Apache-2.0\
@@ -32,7 +47,7 @@ css_comment () {
   echo "$1"
   if ! grep -q "SPDX-License-Identifier" "$1"
   then
-    sed -i '' '1i\
+    gsed '1i\
     /*\
     * Copyright 2021 The MLX Contributors\
     *\
@@ -46,7 +61,7 @@ html_comment () {
   echo "$1"
   if ! grep -q "SPDX-License-Identifier" "$1"
   then
-    sed -i '' '1i\
+    gsed '1i\
     <!--\
      Copyright 2021 The MLX Contributors\
       \
@@ -64,7 +79,7 @@ echo "Adding missing license headers"
 find . -type f -not -path '*/temp/*' -a -not -path '*/\.*' -a \( -name '*.py' -o -name '*.yaml' -o -name '*.yml' -o -name '*.sh' \) -exec bash -c 'hash_comment "$0"' {} \;
 
 # Javascript
-find . -type f -not -path '*/node_modules/*' -a -not -path '*/temp/*' -a -not -path '*/\.*' -a \( -name '*.js' -o -name '*.ts' \) -exec bash -c 'slash_comment "$0"' {} \;
+find . -type f -not -path '*/node_modules/*' -a -not -path '*/temp/*' -a -not -path '*/\.*' -a -not -path '*.bundle.js' -a \( -name '*.js' -o -name '*.ts' \) -exec bash -c 'slash_comment "$0"' {} \;
 
 # CSS
 find . -type f -not -path '*/temp/*' -a -not -path '*/\.*' -a \( -name '*.css' -o -name '*.tsx' \) -exec bash -c 'css_comment "$0"' {} \;
diff --git a/hack/regenerate_catalog_upload_json.py b/hack/regenerate_catalog_upload_json.py
index b9b39478..43483461 100755
--- a/hack/regenerate_catalog_upload_json.py
+++ b/hack/regenerate_catalog_upload_json.py
@@ -1,18 +1,8 @@
 #!/usr/bin/env python3
 
-# Copyright 2021 IBM Corporation
+# Copyright 2021 The MLX Contributors
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0
 
 from __future__ import print_function