diff --git a/doc/bash_completion/make_bash_completion.py b/doc/bash_completion/make_bash_completion.py
index ac315689..6d9e563b 100755
--- a/doc/bash_completion/make_bash_completion.py
+++ b/doc/bash_completion/make_bash_completion.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import subprocess
 from io import StringIO
diff --git a/doc/manual-src/en/mkapiref.py b/doc/manual-src/en/mkapiref.py
index 0b351aa4..4bbc4a31 100755
--- a/doc/manual-src/en/mkapiref.py
+++ b/doc/manual-src/en/mkapiref.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # aria2 - The high speed download utility
 #