diff --git a/tox.ini b/tox.ini
index fc882cf236..e809f1c914 100644
--- a/tox.ini
+++ b/tox.ini
@@ -384,7 +384,7 @@ commands =
 
 [testenv:pep8]
 deps =
-    -r{toxinidir}/test-requirements.txt
+    {[testenv]deps}
     autopep8
 commands =
     autopep8 --exit-code --max-line-length=79 --experimental --diff -r tempest setup.py