diff --git a/tox.ini b/tox.ini
index feae928..24c6108 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,13 +1,13 @@
 # The flake8 and pep8 sections just contain configuration for corresponding tools.
 # Checkers are not run implicitly.
 [flake8]
-exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py
+exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py,mock.py
 ignore = E261
 max-line-length = 101
 
 [pep8]
 count = 1
-exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py
+exclude = *.egg*,.env,.git,.hg,.tox,_*,build*,dist*,venv*,six.py,mock.py
 ignore = E261
 max-line-length = 101
 show-source = 1