diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index c6938c8..2a19b21 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -759,9 +759,9 @@ function ImportPage() {
           const existingByExternalId = new Map(
             (existing ?? []).map((entry: { id: string; external_id: string | null }) => [entry.external_id, entry.id]),
           );
-          const toUpdate = withConflict
+          const toUpdate: Array<Row & { id: string }> = withConflict
             .filter((r) => existingByExternalId.has(String(r.external_id)))
-            .map((r) => ({ ...r, id: existingByExternalId.get(String(r.external_id))! }));
+            .map((r) => ({ ...r, id: existingByExternalId.get(String(r.external_id)) as string }));
           const toInsert = withConflict.filter((r) => !existingByExternalId.has(String(r.external_id)));
 
           if (toUpdate.length > 0) {