diff --git a/lower-constraints.txt b/lower-constraints.txt
index 3f20c47..b5dde63 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -20,7 +20,6 @@ linecache2==1.0.0
 mccabe==0.2.1
 mock==2.0.0
 monotonic==0.6
-mox3==0.20.0
 munch==2.1.0
 netaddr==0.7.18
 netifaces==0.10.4