diff --git a/tox.ini b/tox.ini
index fba18cc..2d2f6c5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ install_command = pip install -U {opts} {packages}
 deps = -r{toxinidir}/requirements.txt
 whitelist_externals = find
 commands =
-  find . -type f -name "*.pyc" -delete
+  find . -type f -name "*.py[c|o]" -delete
   python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:venv]
@@ -21,7 +21,7 @@ commands = {posargs}
 
 [testenv:docs]
 commands =
-  find . -type f -name "*.pyc" -delete
+  find . -type f -name "*.py[c|o]" -delete
   python setup.py build_sphinx
 
 [testenv:pep8]