diff --git a/packages/logger/index.ts b/packages/logger/index.ts
index bd6aa9e1..5745202d 100644
--- a/packages/logger/index.ts
+++ b/packages/logger/index.ts
@@ -48,11 +48,12 @@ export function createLogger({ name }: { name: string }): ILogger {
         const lowerKey = key.toLowerCase();
         if (sensitiveKeys.some((k) => lowerKey.includes(k))) {
           acc[key] = '[REDACTED]';
-        } else if (
-          typeof obj[key] === 'object' &&
-          !(obj[key] instanceof Date)
-        ) {
-          acc[key] = redactObject(obj[key]);
+        } else if (typeof obj[key] === 'object') {
+          if (obj[key] instanceof Date) {
+            acc[key] = obj[key].toISOString();
+          } else {
+            acc[key] = redactObject(obj[key]);
+          }
         } else {
           acc[key] = obj[key];
         }