diff --git a/tox.ini b/tox.ini
index db190f97f..4e5259237 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,6 +27,7 @@ commands =
   stestr slowest
 
 [testenv:pep8]
+skip_install = True
 description =
   Run pep8 tests.
 commands =