diff --git a/requirements.txt b/requirements.txt
index 13b94d9cb9..17e18b4b12 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 
 dnspython>=1.12.0;python_version<'3.0'
 dnspython3>=1.12.0;python_version>='3.0'
-eventlet>=0.16.1,!=0.17.0
+eventlet>=0.17.4  # MIT
 greenlet>=0.3.1
 netifaces>=0.5,!=0.10.0,!=0.10.1
 pastedeploy>=1.3.3