1 files changed, 1 insertions, 1 deletions
diff --git a/setup.cfg b/setup.cfg
index 6c8fbd7..ff317ce 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -33,7 +33,7 @@ test =
   hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
   coverage!=4.4,>=4.0 # Apache-2.0
   doc8 # Apache-2.0
-  eventlet!=0.18.3,<0.21.0,>=0.18.2 # MIT
+  eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
   fixtures>=3.0.0 # Apache-2.0/BSD
   mock>=2.0 # BSD
   python-subunit>=0.0.18 # Apache-2.0/BSD