diff --git a/backend/alembic/versions/018_extend_due_lookup_index.py b/backend/alembic/versions/018_extend_due_lookup_index.py
index 4a4f98d..d1913f5 100644
--- a/backend/alembic/versions/018_extend_due_lookup_index.py
+++ b/backend/alembic/versions/018_extend_due_lookup_index.py
@@ -16,7 +16,7 @@ depends_on = None
 
 
 def upgrade() -> None:
-    op.drop_index("ix_reminders_due_lookup", table_name="reminders")
+    op.execute("DROP INDEX IF EXISTS ix_reminders_due_lookup")
     op.create_index(
         "ix_reminders_due_lookup",
         "reminders",
@@ -25,7 +25,7 @@ def upgrade() -> None:
 
 
 def downgrade() -> None:
-    op.drop_index("ix_reminders_due_lookup", table_name="reminders")
+    op.execute("DROP INDEX IF EXISTS ix_reminders_due_lookup")
     op.create_index(
         "ix_reminders_due_lookup",
         "reminders",