diff --git a/Sources/XuqmSDK/Update/UpdateSDK.swift b/Sources/XuqmSDK/Update/UpdateSDK.swift
index b61de65..aabc66d 100644
--- a/Sources/XuqmSDK/Update/UpdateSDK.swift
+++ b/Sources/XuqmSDK/Update/UpdateSDK.swift
@@ -20,13 +20,18 @@ public final class UpdateSDK {
 
     public func checkAppUpdate(currentVersionCode: Int) async throws -> AppUpdateInfo {
         let config = XuqmSDK.shared.requireConfig()
+        let userId = XuqmSDK.shared.currentUserId
+        var queryItems = [
+            URLQueryItem(name: "appKey", value: config.appKey),
+            URLQueryItem(name: "platform", value: "IOS"),
+            URLQueryItem(name: "currentVersionCode", value: "\(currentVersionCode)"),
+        ]
+        if let userId, !userId.isEmpty {
+            queryItems.append(URLQueryItem(name: "userId", value: userId))
+        }
         return try await ApiClient.shared.request(
             path: "/api/v1/updates/app/check",
-            queryItems: [
-                URLQueryItem(name: "appKey", value: config.appKey),
-                URLQueryItem(name: "platform", value: "IOS"),
-                URLQueryItem(name: "currentVersionCode", value: "\(currentVersionCode)"),
-            ]
+            queryItems: queryItems
         )
     }