diff --git a/src/integration/blockchain/polygon/polygon-client.ts b/src/integration/blockchain/polygon/polygon-client.ts
index c66a73681a..d479fd80f0 100644
--- a/src/integration/blockchain/polygon/polygon-client.ts
+++ b/src/integration/blockchain/polygon/polygon-client.ts
@@ -33,7 +33,9 @@ export class PolygonClient extends EvmClient implements L2BridgeEvmClient {
     const { polygonWalletAddress } = GetConfig().blockchain.polygon;
 
     this.posClient = new POSClient();
-    void this.initPolygonNetwork(ethWalletAddress, polygonWalletAddress);
+    this.initPolygonNetwork(ethWalletAddress, polygonWalletAddress).catch((e) =>
+      this.logger.error('Polygon network initialization failed:', e),
+    );
 
     this.l2TxIdCache = new Set();
   }
diff --git a/src/main.ts b/src/main.ts
index 7097c291b4..4b6f48436a 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -37,6 +37,14 @@ process.on('uncaughtException', (error) => {
   process.exit(1);
 });
 
+process.on('unhandledRejection', (reason) => {
+  const logger = new DfxLogger('UnhandledRejection');
+  logger.error(
+    'Unhandled promise rejection (process kept alive):',
+    reason instanceof Error ? reason : new Error(String(reason)),
+  );
+});
+
 async function bootstrap() {
   if (process.env.APPINSIGHTS_INSTRUMENTATIONKEY) {
     AppInsights.setup().setAutoDependencyCorrelation(true).setAutoCollectConsole(true, true);