diff --git a/lower-constraints.txt b/lower-constraints.txt
index a7a631da..eb65da29 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -21,7 +21,6 @@ Jinja2==2.10
 keystoneauth1==3.4.0
 linecache2==1.0.0
 MarkupSafe==1.0
-mccabe==0.2.1
 mox3==0.20.0
 msgpack-python==0.4.0
 netaddr==0.7.18