diff --git a/server/routers/gerbil/receiveBandwidth.ts b/server/routers/gerbil/receiveBandwidth.ts
index 8bd7b90aa..dcd897471 100644
--- a/server/routers/gerbil/receiveBandwidth.ts
+++ b/server/routers/gerbil/receiveBandwidth.ts
@@ -171,9 +171,8 @@ export async function flushSiteBandwidthToDb(): Promise<void> {
                 }
 
                 // PostgreSQL: batch UPDATE … FROM (VALUES …) — single round-trip per chunk.
-                const valuesList = chunk.map(
-                    ([publicKey, { bytesIn, bytesOut }]) =>
-                        sql`(${publicKey}, ${bytesIn}::bigint, ${bytesOut}::bigint)`
+                const valuesList = chunk.map(([publicKey, { bytesIn, bytesOut }]) =>
+                    sql`(${publicKey}::text, ${bytesIn}::real, ${bytesOut}::real)`
                 );
                 const valuesClause = sql.join(valuesList, sql`, `);
                 return dbQueryRows<{ orgId: string; pubKey: string }>(sql`