diff --git a/tox.ini b/tox.ini
index d0cc47ded48d7..b5ee3bca39027 100644
--- a/tox.ini
+++ b/tox.ini
@@ -79,7 +79,7 @@ deps =
     sphinx_rtd_theme
 passenv = {[testenv:system-tests]passenv} SPHINX_RELEASE READTHEDOCS
 
-[pep8]
+[pycodestyle]
 exclude =
     docs/conf.py,
     google/cloud/bigtable/_generated*/*,