1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index a576ed4..688178c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,7 +29,7 @@ skip_install = True
 deps =
     -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/stein}
     doc8
-    hacking
+    hacking>=1.1.0,<1.2.0
     pygments
     readme
 commands =