diff --git a/test-requirements.txt b/test-requirements.txt
index 2716e53d..7d2eaaf7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -29,7 +29,7 @@ sqlalchemy-utils # BSD License
 PyMySQL>=0.6.2 # MIT License
 
 # Used for making sure we still work with eventlet.
-eventlet>=0.17.4 # MIT
+eventlet!=0.18.0,>=0.17.4 # MIT
 
 # Docs build jobs need these packages.
 sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD