diff --git a/tools/test-requires b/tools/test-requires
index 809db018d0d0..337e6e388e0c 100644
--- a/tools/test-requires
+++ b/tools/test-requires
@@ -6,6 +6,6 @@ mox==0.5.3
 nose
 nosexcover
 openstack.nose_plugin
-pep8>=1.0
+pep8==1.0.1
 sphinx>=1.1.2
 MySQL-python
diff --git a/tox.ini b/tox.ini
index fb50f57b2265..7108fb529f0d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ sitepackages = True
 downloadcache = ~/cache/pip
 
 [testenv:pep8]
-deps = pep8
+deps = pep8==1.0.1
 commands = /bin/bash run_tests.sh -N --pep8
 
 [testenv:coverage]