diff --git a/mayan/apps/sources/models/__init__.py b/mayan/apps/sources/models/__init__.py
new file mode 100644
index 0000000000..ffdafce08a
--- /dev/null
+++ b/mayan/apps/sources/models/__init__.py
@@ -0,0 +1,6 @@
+from .base import *  # NOQA
+from .email_sources import *  # NOQA
+from .scanner_sources import *  # NOQA
+from .staging_folder_sources import *  # NOQA
+from .watch_folder_sources import *  # NOQA
+from .webform_sources import *  # NOQA