diff --git a/backend/migrations/versions/836cf8009001_merge_heads_for_activity_events_index.py b/backend/migrations/versions/836cf8009001_merge_heads_for_activity_events_index.py
new file mode 100644
index 0000000..dc40c77
--- /dev/null
+++ b/backend/migrations/versions/836cf8009001_merge_heads_for_activity_events_index.py
@@ -0,0 +1,26 @@
+"""merge heads for activity_events index
+
+Revision ID: 836cf8009001
+Revises: b05c7b628636, fa6e83f8d9a1
+Create Date: 2026-02-13 10:57:21.395382
+
+"""
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '836cf8009001'
+down_revision = ('b05c7b628636', 'fa6e83f8d9a1')
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass