diff --git a/tox.ini b/tox.ini
index 49c31708..59ddc4ae 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@ extras =
     neo
 usedevelop=True
 commands =
-    pycodestyle --ignore=E402,W503,W504 efel tests
+    pycodestyle --ignore=E402,W503,W504 --exclude=_version.py efel tests
     pytest -sx -n auto tests