diff --git a/tox.ini b/tox.ini
index 9356dd7..6efac78 100644
--- a/tox.ini
+++ b/tox.ini
@@ -106,7 +106,11 @@
        -r{toxinidir}/test-requirements.txt
 
 [testenv:pep8]
-commands = flake8
+setenv = MODULEPATH=tempest.common.generate_sample_tempest
+commands =
+   flake8 {posargs}
+   {toxinidir}/tools/config/check_uptodate.sh
+
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt