diff --git a/migrations/versions/021_merge_heads.py b/migrations/versions/021_merge_heads.py
new file mode 100644
index 0000000..9b1e662
--- /dev/null
+++ b/migrations/versions/021_merge_heads.py
@@ -0,0 +1,22 @@
+"""Merge 020_ca_serial_timestamp_start and 002_add_can_sudo_to_departments into a single head.
+
+Revision ID: 021_merge_heads
+Revises: 020_ca_serial_timestamp_start, 002_add_can_sudo_to_departments
+Create Date: 2026-03-09
+
+"""
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '021_merge_heads'
+down_revision = ('020_ca_serial_timestamp_start', '002_add_can_sudo_to_departments')
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    pass
+
+
+def downgrade():
+    pass