diff --git a/agreement_legal/migrations/13.0.1.0.0/post-migration.py b/agreement_legal/migrations/13.0.1.0.0/post-migration.py
new file mode 100644
index 000000000..89eba39b9
--- /dev/null
+++ b/agreement_legal/migrations/13.0.1.0.0/post-migration.py
@@ -0,0 +1,13 @@
+# Copyright 2021 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html)
+
+from openupgradelib import openupgrade, openupgrade_90
+
+attachment_fields = {
+    "agreement": [("signed_contract", None)],
+}
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    openupgrade_90.convert_binary_field_to_attachment(env, attachment_fields)
diff --git a/agreement_legal/migrations/13.0.1.0.0/pre-migration.py b/agreement_legal/migrations/13.0.1.0.0/pre-migration.py
new file mode 100644
index 000000000..a3c6e1dd1
--- /dev/null
+++ b/agreement_legal/migrations/13.0.1.0.0/pre-migration.py
@@ -0,0 +1,13 @@
+# Copyright 2021 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade
+
+column_renames = {
+    "agreement": [("signed_contract", None)],
+}
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    openupgrade.rename_columns(env.cr, column_renames)