diff --git a/repo2docker/utils.py b/repo2docker/utils.py
index 37a8e9e5..19577544 100644
--- a/repo2docker/utils.py
+++ b/repo2docker/utils.py
@@ -2,7 +2,6 @@ from contextlib import contextmanager
 from functools import partial
 import os
 import re
-import shutil
 import subprocess
 
 from traitlets import Integer, TraitError