diff --git a/test-requirements.txt b/test-requirements.txt
index 8899576..675e744 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -16,6 +16,6 @@ testtools>=1.4.0
 mock>=1.2
 vine
 wsgi-intercept>=1.4.1 # MIT License
-eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
+eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
 sphinxcontrib-actdiag  # BSD
 python-memcached>=1.56