diff --git a/addons/queue_job/migrations/15.0.1.1.0/pre-migration.py b/addons/queue_job/migrations/15.0.1.1.0/pre-migration.py
new file mode 100644
index 0000000..8ae6cb3
--- /dev/null
+++ b/addons/queue_job/migrations/15.0.1.1.0/pre-migration.py
@@ -0,0 +1,33 @@
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html)
+
+from odoo.tools.sql import column_exists, table_exists
+
+
+def migrate(cr, version):
+    if table_exists(cr, "queue_job") and not column_exists(
+        cr, "queue_job", "exec_time"
+    ):
+        # Disable trigger otherwise the update takes ages.
+        cr.execute(
+            """
+            ALTER TABLE queue_job DISABLE TRIGGER queue_job_notify;
+        """
+        )
+        cr.execute(
+            """
+            ALTER TABLE queue_job ADD COLUMN exec_time double precision DEFAULT 0;
+        """
+        )
+        cr.execute(
+            """
+            UPDATE
+                queue_job
+            SET
+                exec_time = EXTRACT(EPOCH FROM (date_done - date_started));
+        """
+        )
+        cr.execute(
+            """
+            ALTER TABLE queue_job ENABLE TRIGGER queue_job_notify;
+        """
+        )