diff --git a/test-requirements.txt b/test-requirements.txt
index daea6d3f..fefbb086 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@
 coverage!=4.4,>=4.0 # Apache-2.0
 eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
 flake8-import-order>=0.13 # LGPLv3
-hacking>=1.0.0 # Apache-2.0
+hacking>=1.0.0,<1.1.0 # Apache-2.0
 mock>=2.0.0 # BSD
 os-testr>=1.0.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0