diff --git a/lib/core/src/lib/common/utils/date-fns-utils.spec.ts b/lib/core/src/lib/common/utils/date-fns-utils.spec.ts
index 3c545ae6c9..9280e6862b 100644
--- a/lib/core/src/lib/common/utils/date-fns-utils.spec.ts
+++ b/lib/core/src/lib/common/utils/date-fns-utils.spec.ts
@@ -57,8 +57,8 @@ describe('Date Format Translations', () => {
     });
 
     it('should add seconds to a date time value', () => {
-        const inputDateTime = '2023-09-02T10:00:00Z';
-        const expectedUpdatedValue = '2023-09-02T10:00:00.00Z';
+        const inputDateTime = '2023-09-02T10:00:000Z';
+        const expectedUpdatedValue = '2023-09-02T10:00:00.000Z';
 
         const result = DateFnsUtils.addSeconds(inputDateTime);