diff --git a/requirements/toolchain.txt b/requirements/toolchain.txt
index 6a246a24b5..d9c09736bd 100644
--- a/requirements/toolchain.txt
+++ b/requirements/toolchain.txt
@@ -2,7 +2,7 @@
 
 coverage==4.3.4
 detox==0.10.0
-eventlet==0.20.1
+eventlet==0.31.0
 greenlet==0.4.12
 pluggy==0.4.0
 py==1.4.32