diff --git a/setup.cfg b/setup.cfg
index 4d59ea27..87218160 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -52,7 +52,7 @@ etcd3 =
   etcd3>=0.12.0 # Apache-2.0
   grpcio>=1.18.0
 etcd3gw =
-  etcd3gw>=0.1.0 # Apache-2.0
+  etcd3gw!=0.2.6,>=0.1.0 # Apache-2.0
 zake =
   zake>=0.1.6 # Apache-2.0
 redis =