diff --git a/app/zeus/service/lark/internal/lark/user.go b/app/zeus/service/lark/internal/lark/user.go
index 6668acc..622aa2b 100644
--- a/app/zeus/service/lark/internal/lark/user.go
+++ b/app/zeus/service/lark/internal/lark/user.go
@@ -8,7 +8,7 @@ import (
 
 func (l Lark) Auth(code string) (*authen.UserAccessTokenInfo, error) {
 	return l.userService.Authens.AccessToken(core.WrapContext(context.Background()), &authen.AuthenAccessTokenReqBody{
-		GrantType: "",
+		GrantType: "authorization_code",
 		Code:      code,
 	}).Do()
 }