diff --git a/api/viid_client.go b/api/viid_client.go
index 9d20cab..f0079b8 100644
--- a/api/viid_client.go
+++ b/api/viid_client.go
@@ -121,7 +121,7 @@ func (c *ImageProcessingConfig) GetEffectiveConfig() *ImageProcessingConfig {
 }
 
 type UploadConfig struct {
-	TaskID             int64                  `json:"taskId"`
+	TaskID             int64                  `json:"taskId,string"`
 	FaceUploadURL      string                 `json:"faceUploadUrl"`
 	ThumbnailUploadURL string                 `json:"thumbnailUploadUrl"`
 	SourceUploadURL    string                 `json:"sourceUploadUrl"`