diff --git a/lower-constraints.txt b/lower-constraints.txt
index 679be78c..5f31b45d 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -17,7 +17,6 @@ keystoneauth1==3.4.0
 lazy-object-proxy==1.3.1
 linecache2==1.0.0
 MarkupSafe==1.0
-mccabe==0.2.1
 mock==2.0.0
 mox3==0.20.0
 networkx==1.10