diff --git a/tools/pip-requires b/tools/pip-requires
index 7b70715a..7a131ddf 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -1,7 +1,7 @@
 # NOTE: OpenStack avoids some versions of eventlet, because of the
 # following issue.
 # https://github.com/eventlet/eventlet/issues/401
-eventlet!=0.18.3,>=0.18.2,!=0.20.1,!=0.21.0
+eventlet!=0.18.3,>=0.18.2,!=0.20.1,!=0.21.0,!=0.23.0
 msgpack>=0.3.0  # RPC library, BGP speaker(net_cntl)
 netaddr
 oslo.config>=1.15.0