diff --git a/setup.py b/setup.py
index d317374..97b1fdf 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ version = "0.0.1.dev1"
 install_require = [
     'async_generator',
     'cryptography',
-    'hvac',
+    'hvac<0.7.0',
     'jinja2',
     'juju',
     'juju-wait',