diff --git a/webgpu-cts/scripts/compile_src.py b/webgpu-cts/scripts/compile_src.py
index b08c0a74f6..91c0eb4325 100755
--- a/webgpu-cts/scripts/compile_src.py
+++ b/webgpu-cts/scripts/compile_src.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2022 The Dawn Authors
 #
diff --git a/webgpu-cts/scripts/gen_ts_dep_lists.py b/webgpu-cts/scripts/gen_ts_dep_lists.py
index 5862ab28e7..3ef1f2a41f 100755
--- a/webgpu-cts/scripts/gen_ts_dep_lists.py
+++ b/webgpu-cts/scripts/gen_ts_dep_lists.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2022 The Dawn Authors
 #
diff --git a/webgpu-cts/scripts/list.py b/webgpu-cts/scripts/list.py
index d63beb4655..70d278ac99 100755
--- a/webgpu-cts/scripts/list.py
+++ b/webgpu-cts/scripts/list.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2022 The Dawn Authors
 #
diff --git a/webgpu-cts/scripts/tsc_ignore_errors.py b/webgpu-cts/scripts/tsc_ignore_errors.py
index 14b8455142..be7feb5083 100755
--- a/webgpu-cts/scripts/tsc_ignore_errors.py
+++ b/webgpu-cts/scripts/tsc_ignore_errors.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Copyright 2022 The Dawn Authors
 #