diff --git a/setup.py b/setup.py
index 6129da7f07d663eb7634a963a0cace684043a1f8..b8f6112d3755458153e73345e9e97baed96b792a 100755
--- a/setup.py
+++ b/setup.py
@@ -58,6 +58,7 @@ setup(
         "django-guardian",
         "djangorestframework",
         "django-rest-swagger",
+        "django-post_office",
         "docopt",
         "docutils",
         "Jinja2",