diff --git a/tools/test-requires b/tools/test-requires
index 88e2046573a..93e43893448 100644
--- a/tools/test-requires
+++ b/tools/test-requires
@@ -7,7 +7,7 @@ nose
 nosehtmloutput
 nosexcover
 openstack.nose_plugin
-pep8
+pep8==1.3.3
 sphinx>=1.1.2
 unittest2
 webtest==1.3.3
diff --git a/tox.ini b/tox.ini
index 1c490a6bfac..df93a76843d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,7 +19,7 @@ sitepackages = True
 downloadcache = ~/cache/pip
 
 [testenv:pep8]
-deps = pep8
+deps = pep8==1.3.3
        setuptools_git>=0.4
 commands = pep8 --repeat --show-source --ignore=E125 --exclude=.venv,.tox,dist,doc,openstack,*egg .