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@@ -45,12 +45,13 @@ TODO: add Ubuntu LTS
 
 ### External Modules
 
-| **Module** | **Version** | **URL** |
-|-|-|-|
-| vobject | >= 0.9.6 | https://pypi.org/project/vobject/<br>Legacy: https://github.com/eventable/vobject<br>Successor: https://github.com/py-vobject/vobject |
-| defusedxml | >= 0.6.0 | https://pypi.org/project/defusedxml/ |
-| passlib | >= 1.7.2 | https://pypi.org/project/passlib/ |
-| dateutil | >= 2.8.1 | https://pypi.org/project/python-dateutil/ ||
+| **Module** | **Version** | **URL** | **Comment** |
+|-|-|-|-|
+| vobject | >= 0.9.6 | https://pypi.org/project/vobject/ | Github<br>Legacy: https://github.com/eventable/vobject<br>Successor: https://github.com/py-vobject/vobject |
+| defusedxml | >= 0.6.0 | https://pypi.org/project/defusedxml/ | |
+| passlib | >= 1.7.2 | https://pypi.org/project/passlib/ | |
+| dateutil | >= 2.8.1 | https://pypi.org/project/python-dateutil/ | |
+| bcrypt | >= 4.0.0 ??? | https://pypi.org/project/bcrypt/ | only required in case of `htpasswd` file user authentication |
 
 # Radicale Installation