diff --git a/setup.py b/setup.py
index 95aaf6f..7d20665 100644
--- a/setup.py
+++ b/setup.py
@@ -8,6 +8,7 @@ from setuptools.command.test import test as TestCommand
 
 version = "0.0.1.dev1"
 install_require = [
+    'async_generator',
     'hvac',
     'jinja2',
     'juju',