diff --git a/script/version_bump.py b/script/version_bump.py
index eb61420a600..e324b231d06 100755
--- a/script/version_bump.py
+++ b/script/version_bump.py
@@ -130,7 +130,8 @@ def main():
     if not arguments.commit:
         return
 
-    subprocess.run(['git', 'commit', '-am', f'Bumped version to {bumped}'])
+    subprocess.run([
+        'git', 'commit', '-am', 'Bumped version to {}'.format(bumped)])
 
 
 def test_bump_version():