diff --git a/email-worker-nodejs/src/logger.ts b/email-worker-nodejs/src/logger.ts
index 545b695..e37ce14 100644
--- a/email-worker-nodejs/src/logger.ts
+++ b/email-worker-nodejs/src/logger.ts
@@ -103,12 +103,15 @@ function ensureFileStream(): WriteStream | null {
 // ---------------------------------------------------------------------------
 const logger = pino({
   level: 'info',
-  formatters: {
-    level(label) {
-      return { level: label };
-    },
-  },
-  timestamp: pino.stdTimeFunctions.isoTime,
+  transport: {
+    target: 'pino-pretty',
+    options: {
+      colorize: true,
+      translateTime: 'SYS:yyyy-mm-dd HH:MM:ss',
+      ignore: 'pid,hostname',
+      singleLine: true
+    }
+  }
 });
 
 // ---------------------------------------------------------------------------