diff --git a/backend/gn_module_monitoring/migrations/126aca9e5503_add_observers_txt_column_t_base_visit.py b/backend/gn_module_monitoring/migrations/126aca9e5503_add_observers_txt_column_t_base_visit.py
deleted file mode 100644
index 680db0d19..000000000
--- a/backend/gn_module_monitoring/migrations/126aca9e5503_add_observers_txt_column_t_base_visit.py
+++ /dev/null
@@ -1,36 +0,0 @@
-"""add_observers_txt_column_t_base_visit
-
-Revision ID: 126aca9e5503
-Revises: a5dce2633e4c
-Create Date: 2023-09-12 11:49:24.535949
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-
-# revision identifiers, used by Alembic.
-revision = "126aca9e5503"
-down_revision = "a5dce2633e4c"
-branch_labels = None
-depends_on = None
-
-monitorings_schema = "gn_monitoring"
-table = "t_base_visits"
-column = "observers_txt"
-
-
-def upgrade():
-    op.add_column(
-        table,
-        sa.Column(
-            column,
-            sa.Text(),
-            nullable=True,
-        ),
-        schema=monitorings_schema,
-    )
-
-
-def downgrade():
-    op.drop_column(table, column, schema=monitorings_schema)
diff --git a/backend/gn_module_monitoring/migrations/b53bafb13ce8_create_bib_type_site.py b/backend/gn_module_monitoring/migrations/b53bafb13ce8_create_bib_type_site.py
index 8178524dc..2b21c9323 100644
--- a/backend/gn_module_monitoring/migrations/b53bafb13ce8_create_bib_type_site.py
+++ b/backend/gn_module_monitoring/migrations/b53bafb13ce8_create_bib_type_site.py
@@ -1,7 +1,7 @@
 """create_bib_type_site
 
 Revision ID: b53bafb13ce8
-Revises: e78003460441
+Revises: a5dce2633e4c
 Create Date: 2022-12-06 16:18:24.512562
 
 """
@@ -10,7 +10,7 @@
 
 # revision identifiers, used by Alembic.
 revision = "b53bafb13ce8"
-down_revision = "126aca9e5503"
+down_revision = "a5dce2633e4c"
 branch_labels = None
 depends_on = None