diff --git a/diracx-core/src/diracx/core/settings.py b/diracx-core/src/diracx/core/settings.py
index 99059023..4b785996 100644
--- a/diracx-core/src/diracx/core/settings.py
+++ b/diracx-core/src/diracx/core/settings.py
@@ -1,3 +1,5 @@
+"""Settings for the core services."""
+
 from __future__ import annotations
 
 from diracx.core.properties import SecurityProperty