diff --git a/src/modules/crawler/crawler.minabridge.ts b/src/modules/crawler/crawler.minabridge.ts
index d36bfcd..41198cc 100644
--- a/src/modules/crawler/crawler.minabridge.ts
+++ b/src/modules/crawler/crawler.minabridge.ts
@@ -62,7 +62,7 @@ export class SCBridgeMinaCrawler {
       }
       // udpate current latest block
       await this.updateLatestBlockCrawl(Number(toBlock.toString()), queryRunner);
-      return queryRunner.commitTransaction();
+      await queryRunner.commitTransaction();
     } catch (error) {
       await queryRunner.rollbackTransaction();
       throw error;