diff --git a/core-java-modules/core-java-8-datetime-2/src/test/java/com/baeldung/localdatetoiso/LocalDateToISOUnitTest.java b/core-java-modules/core-java-8-datetime-2/src/test/java/com/baeldung/localdatetoiso/LocalDateToISOUnitTest.java
index 077c7ca858..7e45f4cba1 100644
--- a/core-java-modules/core-java-8-datetime-2/src/test/java/com/baeldung/localdatetoiso/LocalDateToISOUnitTest.java
+++ b/core-java-modules/core-java-8-datetime-2/src/test/java/com/baeldung/localdatetoiso/LocalDateToISOUnitTest.java
@@ -11,7 +11,7 @@ public class LocalDateToISOUnitTest {
         LocalDateToISO localDateToISO = new LocalDateToISO();
         LocalDate localDate = LocalDate.of(2023, 11, 6);
 
-        String expected = "2023-11-06T00:00:00Z";
+        String expected = "2023-11-06T00:00:00.000Z";
         String actual = localDateToISO.formatUsingDateTimeFormatter(localDate);
         assertEquals(expected, actual);
     }
@@ -21,7 +21,7 @@ public class LocalDateToISOUnitTest {
         LocalDateToISO localDateToISO = new LocalDateToISO();
         LocalDate localDate = LocalDate.of(2023, 11, 6);
 
-        String expected = "2023-11-06T00:00:00Z";
+        String expected = "2023-11-06T00:00:00.000Z";
         String actual = localDateToISO.formatUsingSimpleDateFormat(localDate);
         assertEquals(expected, actual);
     }
@@ -31,7 +31,7 @@ public class LocalDateToISOUnitTest {
         LocalDateToISO localDateToISO = new LocalDateToISO();
         org.joda.time.LocalDate localDate = new org.joda.time.LocalDate(2023, 11, 6);
 
-        String expected = "2023-11-06T00:00:00Z";
+        String expected = "2023-11-06T00:00:00.000Z";
         String actual = localDateToISO.formatUsingJodaTime(localDate);
         assertEquals(expected, actual);
     }