diff --git a/test-requirements.txt b/test-requirements.txt
index ba4e1887..bd1e7f1b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -24,7 +24,7 @@ psycopg2>=2.6.2 # LGPL/ZPL
 
 # test
 pydotplus>=2.0.2 # MIT License
-hacking>=0.10.0,<1.2
+hacking>=0.10.0,<2.1
 oslotest>=3.2.0 # Apache-2.0
 mock>=2.0.0 # BSD
 testtools>=2.2.0 # MIT