diff --git a/src/gateway/server.impl.ts b/src/gateway/server.impl.ts
index efa91be76..a793966b6 100644
--- a/src/gateway/server.impl.ts
+++ b/src/gateway/server.impl.ts
@@ -148,6 +148,19 @@ export async function startGatewayServer(
   port = 18789,
   opts: GatewayServerOptions = {},
 ): Promise<GatewayServer> {
+  // Install global unhandled rejection handler to prevent gateway crashes
+  // from background promises (e.g., Telegram polling, network operations)
+  const handleUnhandledRejection = (reason: unknown, promise: Promise<unknown>) => {
+    const formatted = reason instanceof Error ? reason.message : String(reason);
+    log.error(`unhandled promise rejection: ${formatted}`);
+    // Log additional details for debugging
+    if (reason instanceof Error && reason.stack) {
+      log.debug(`rejection stack: ${reason.stack}`);
+    }
+    // Don't crash the gateway - log and continue
+  };
+  process.on("unhandledRejection", handleUnhandledRejection);
+
   // Ensure all default port derivations (browser/canvas) see the actual runtime port.
   process.env.OPENCLAW_GATEWAY_PORT = String(port);
   logAcceptedEnvOption({
@@ -572,6 +585,9 @@ export async function startGatewayServer(
 
   return {
     close: async (opts) => {
+      // Remove unhandled rejection handler on shutdown
+      process.off("unhandledRejection", handleUnhandledRejection);
+      
       if (diagnosticsEnabled) {
         stopDiagnosticHeartbeat();
       }
diff --git a/src/telegram/monitor.ts b/src/telegram/monitor.ts
index 2709b591b..17ea74a18 100644
--- a/src/telegram/monitor.ts
+++ b/src/telegram/monitor.ts
@@ -161,7 +161,12 @@ export async function monitorTelegramProvider(opts: MonitorTelegramOpts = {}) {
     const runner = run(bot, createTelegramRunnerOptions(cfg));
     const stopOnAbort = () => {
       if (opts.abortSignal?.aborted) {
-        void runner.stop();
+        // Properly await runner.stop() to prevent unhandled rejections
+        runner.stop().catch((err) => {
+          (opts.runtime?.error ?? console.error)(
+            `telegram: runner stop failed: ${formatErrorMessage(err)}`,
+          );
+        });
       }
     };
     opts.abortSignal?.addEventListener("abort", stopOnAbort, { once: true });
@@ -194,6 +199,13 @@ export async function monitorTelegramProvider(opts: MonitorTelegramOpts = {}) {
       }
     } finally {
       opts.abortSignal?.removeEventListener("abort", stopOnAbort);
+      // Ensure runner is stopped to prevent lingering promises
+      try {
+        await runner.stop();
+      } catch (stopErr) {
+        // Suppress errors from runner.stop() in finally block
+        // (already logged by stopOnAbort if abort-triggered)
+      }
     }
   }
 }