diff --git a/lower-constraints.txt b/lower-constraints.txt
index 82b9808..147ab4f 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -14,7 +14,7 @@ doc8==0.6.0
 docutils==0.14
 dulwich==0.19.0
 enum-compat==0.0.2
-eventlet==0.18.2
+eventlet==0.31.0
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0