diff --git a/global-requirements.txt b/global-requirements.txt
index 486831dd34..c1c4274583 100644
--- a/global-requirements.txt
+++ b/global-requirements.txt
@@ -161,7 +161,7 @@ openstack-doc-tools>=0.15
 openstack.nose_plugin>=0.7
 oslosphinx
 oslotest
-pep8==1.4.6,==1.5.6,==1.5.7
+pep8==1.5.7
 proboscis==1.2.5.3
 psycopg2
 pyflakes==0.8.1