diff --git a/tox.ini b/tox.ini
index 89900f6cf..7987c9517 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,10 +21,7 @@ commands = bash -x {toxinidir}/setup-test-env.sh python setup.py testr --slowest
 
 [testenv:pep8]
 # Install bounded pep8/pyflakes first, then let flake8 install
-deps = pep8==1.4.5
-       pyflakes==0.7.2
-       flake8==2.0
-       hacking>=0.8.0,<0.9
+deps = hacking>=0.8.0,<0.9
 commands =
     flake8
     flake8 --filename=ceilometer-* bin