diff --git a/src/preload/index.ts b/src/preload/index.ts
index 9b46576476..9cf68543a8 100644
--- a/src/preload/index.ts
+++ b/src/preload/index.ts
@@ -295,7 +295,8 @@ const api = {
       return ipcRenderer.invoke(IpcChannel.Mcp_UploadDxt, buffer, file.name)
     },
     abortTool: (callId: string) => ipcRenderer.invoke(IpcChannel.Mcp_AbortTool, callId),
-    getServerVersion: (server: MCPServer) => ipcRenderer.invoke(IpcChannel.Mcp_GetServerVersion, server)
+    getServerVersion: (server: MCPServer): Promise<string | null> =>
+      ipcRenderer.invoke(IpcChannel.Mcp_GetServerVersion, server)
   },
   python: {
     execute: (script: string, context?: Record<string, any>, timeout?: number) =>