diff --git a/requirements.txt b/requirements.txt
index ef900b842..86e177f75 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ cachetools>=1.0.0 # MIT License
 # FIXME(markmc): remove this when the drivers no longer
 # import eventlet
 
-eventlet>=0.18.2 # MIT
+eventlet!=0.18.3,>=0.18.2 # MIT
 greenlet>=0.3.2 # MIT
 
 WebOb>=1.2.3 # MIT
diff --git a/test-requirements.txt b/test-requirements.txt
index e3fc95d64..2d4dd834e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -23,7 +23,7 @@ retrying!=1.3.0,>=1.2.3 # Apache-2.0
 pyzmq>=14.3.1 # LGPL+BSD
 
 # for test_impl_kafka
-kafka-python>=0.9.2 # Apache-2.0
+kafka-python<1.0.0,>=0.9.5 # Apache-2.0
 
 # when we can require tox>= 1.4, this can go into tox.ini:
 #  [testenv:cover]