diff --git a/scripts/generate_json_docs.py b/scripts/generate_json_docs.py
index f8376568d8e5..cda8a374ebe2 100644
--- a/scripts/generate_json_docs.py
+++ b/scripts/generate_json_docs.py
@@ -653,5 +653,6 @@ def main():
     if args.show_toc:
         print(json.dumps(toc, indent=4))
 
+
 if __name__ == '__main__':
     main()
diff --git a/tox.ini b/tox.ini
index 4ef739653dfc..37b5d7d75cdd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -196,7 +196,7 @@ deps =
 passenv =
     {[testenv:docs]passenv}
 
-[pep8]
+[pycodestyle]
 exclude =
     docs/conf.py,
     bigtable/google/cloud/bigtable/_generated/*,
@@ -211,7 +211,7 @@ commands =
     python {toxinidir}/scripts/run_pylint.py
 deps =
     {[testing]deps}
-    pycodestyle
+    pycodestyle >= 2.1.0
     pylint >= 1.6.4
 passenv = {[testenv:system-tests]passenv}