diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 6f106a3..8d3d3ef 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -61,7 +61,7 @@ model Message {
   time       Int
   brief      String?
   seq        Int
-  rand       Int
+  rand       BigInt   @db.BigInt
   pktnum     Int
   tgChatId   BigInt   @db.BigInt
   tgMsgId    Int
diff --git a/src/services/DeleteMessageService.ts b/src/services/DeleteMessageService.ts
index 94452ae..3a3e488 100644
--- a/src/services/DeleteMessageService.ts
+++ b/src/services/DeleteMessageService.ts
@@ -53,7 +53,7 @@ export default class DeleteMessageService {
       });
       if (messageInfo) {
         try {
-          this.recallQqMessage(pair.qq, messageInfo.seq, messageInfo.rand,
+          this.recallQqMessage(pair.qq, messageInfo.seq, Number(messageInfo.rand),
             pair.qq instanceof Friend ? messageInfo.time : messageInfo.pktnum,
             pair, isOthersMsg);
           await db.message.delete({
diff --git a/src/services/ForwardService.ts b/src/services/ForwardService.ts
index fd2096f..935a559 100644
--- a/src/services/ForwardService.ts
+++ b/src/services/ForwardService.ts
@@ -416,7 +416,7 @@ export default class ForwardService {
             source = {
               message: quote.brief || ' ',
               seq: quote.seq,
-              rand: quote.rand,
+              rand: Number(quote.rand),
               user_id: Number(quote.qqSenderId),
               time: quote.time,
             };