diff --git a/tools/v8/fetch_deps.py b/tools/v8/fetch_deps.py
index 5fb7ff7676a..b7e628608ad 100755
--- a/tools/v8/fetch_deps.py
+++ b/tools/v8/fetch_deps.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright 2017 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
diff --git a/tools/v8/node_common.py b/tools/v8/node_common.py
index 2efb21860e3..b78e30c321d 100755
--- a/tools/v8/node_common.py
+++ b/tools/v8/node_common.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright 2017 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.