diff --git a/docs/developer/migrations.md b/docs/developer/migrations.md
index 2d0ab46..36c9dd9 100644
--- a/docs/developer/migrations.md
+++ b/docs/developer/migrations.md
@@ -15,3 +15,5 @@ venv/bin/alembic -c argos/server/migrations/alembic.ini revision \
 ```
 
 Edit the created file to remove comments and adapt it to make sure the migration is complete (Alembic is not powerful enough to cover all the corner cases).
+
+In case you want to add an `Enum` type, please have a look at [argos/server/migrations/versions/dcf73fa19fce_specify_check_method.py](https://framagit.org/framasoft/framaspace/argos/-/blob/main/argos/server/migrations/versions/dcf73fa19fce_specify_check_method.py).