diff --git a/cibuildwheel/bashlex_eval.py b/cibuildwheel/bashlex_eval.py
index c055a0a6..f4f0641d 100644
--- a/cibuildwheel/bashlex_eval.py
+++ b/cibuildwheel/bashlex_eval.py
@@ -1,11 +1,9 @@
 import shlex
 import subprocess
-
-from typing import Dict, NamedTuple, Callable, Optional, List, Sequence
+from typing import Callable, Dict, List, NamedTuple, Optional, Sequence
 
 import bashlex  # type: ignore
 
-
 # a function that takes a shell command and the environment, and returns the result
 EnvironmentExecutor = Callable[[str, Dict[str, str]], str]