diff --git a/app/models/moduleimpls.py b/app/models/moduleimpls.py
index a7aadcba..984f3a29 100644
--- a/app/models/moduleimpls.py
+++ b/app/models/moduleimpls.py
@@ -108,9 +108,9 @@ notes_modules_enseignants = db.Table(
     db.Column(
         "moduleimpl_id",
         db.Integer,
-        db.ForeignKey("notes_moduleimpl.id"),
+        db.ForeignKey("notes_moduleimpl.id", ondelete="CASCADE"),
     ),
-    db.Column("ens_id", db.Integer, db.ForeignKey("user.id")),
+    db.Column("ens_id", db.Integer, db.ForeignKey("user.id", ondelete="CASCADE")),
     # ? db.UniqueConstraint("moduleimpl_id", "ens_id"),
 )
 # XXX il manque probablement une relation pour gérer cela
diff --git a/migrations/versions/6bc3f51154b4_cascades_sur_notes_modules_enseignants.py b/migrations/versions/6bc3f51154b4_cascades_sur_notes_modules_enseignants.py
new file mode 100644
index 00000000..0f6f65f8
--- /dev/null
+++ b/migrations/versions/6bc3f51154b4_cascades_sur_notes_modules_enseignants.py
@@ -0,0 +1,74 @@
+"""Cascades sur notes_modules_enseignants
+
+Revision ID: 6bc3f51154b4
+Revises: 814e8e37d082
+Create Date: 2022-09-21 13:12:47.850227
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "6bc3f51154b4"
+down_revision = "814e8e37d082"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(
+        "notes_modules_enseignants_moduleimpl_id_fkey",
+        "notes_modules_enseignants",
+        type_="foreignkey",
+    )
+    op.drop_constraint(
+        "notes_modules_enseignants_ens_id_fkey",
+        "notes_modules_enseignants",
+        type_="foreignkey",
+    )
+    op.create_foreign_key(
+        None,
+        "notes_modules_enseignants",
+        "user",
+        ["ens_id"],
+        ["id"],
+        ondelete="CASCADE",
+    )
+    op.create_foreign_key(
+        None,
+        "notes_modules_enseignants",
+        "notes_moduleimpl",
+        ["moduleimpl_id"],
+        ["id"],
+        ondelete="CASCADE",
+    )
+    op.alter_column("role", "name", existing_type=sa.VARCHAR(length=64), nullable=False)
+    op.drop_constraint("role_name_key", "role", type_="unique")
+    op.create_index(op.f("ix_role_name"), "role", ["name"], unique=True)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f("ix_role_name"), table_name="role")
+    op.create_unique_constraint("role_name_key", "role", ["name"])
+    op.alter_column("role", "name", existing_type=sa.VARCHAR(length=64), nullable=True)
+    op.drop_constraint(None, "notes_modules_enseignants", type_="foreignkey")
+    op.drop_constraint(None, "notes_modules_enseignants", type_="foreignkey")
+    op.create_foreign_key(
+        "notes_modules_enseignants_ens_id_fkey",
+        "notes_modules_enseignants",
+        "user",
+        ["ens_id"],
+        ["id"],
+    )
+    op.create_foreign_key(
+        "notes_modules_enseignants_moduleimpl_id_fkey",
+        "notes_modules_enseignants",
+        "notes_moduleimpl",
+        ["moduleimpl_id"],
+        ["id"],
+    )
+    # ### end Alembic commands ###