diff --git a/cibuildwheel/macos.py b/cibuildwheel/macos.py
index d9723e8b..5ada8ab2 100644
--- a/cibuildwheel/macos.py
+++ b/cibuildwheel/macos.py
@@ -1,5 +1,4 @@
 from __future__ import print_function
-from time import sleep
 import tempfile
 import os, subprocess, shlex, sys, shutil
 from collections import namedtuple