diff --git a/lower-constraints.txt b/lower-constraints.txt
index 0928e75338..cfb0fe3d0c 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -35,7 +35,6 @@ keystonemiddleware==4.17.0
 linecache2==1.0.0
 lxml==3.4.1
 MarkupSafe==1.0
-mccabe==0.2.1
 mock==2.0
 monotonic==1.4
 msgpack==0.5.6