diff --git a/lower-constraints.txt b/lower-constraints.txt
index 34ae760e63..efc51f30ab 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -23,7 +23,7 @@ deprecation==2.0
 dogpile.cache==0.6.5
 enum34==1.0.4
 enum-compat==0.0.2
-eventlet==0.20.0
+eventlet==0.31.0
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0