diff --git a/vorgang-manager-server/src/main/java/de/ozgcloud/vorgang/vorgang/LockMapper.java b/vorgang-manager-server/src/main/java/de/ozgcloud/vorgang/vorgang/LockMapper.java
index 668cccff498c4a5d312783623ae8bd9ce7989237..8260a3e36fbe4cb35e6f4ada6a932480ddb25c69 100644
--- a/vorgang-manager-server/src/main/java/de/ozgcloud/vorgang/vorgang/LockMapper.java
+++ b/vorgang-manager-server/src/main/java/de/ozgcloud/vorgang/vorgang/LockMapper.java
@@ -23,7 +23,7 @@
  */
 package de.ozgcloud.vorgang.vorgang;
 
-import java.time.ZoneId;
+import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.util.Map;
 
@@ -47,6 +47,6 @@ public interface LockMapper {
 	}
 
 	default ZonedDateTime getLockedSince() {
-		return ZonedDateTime.now(ZoneId.of("UTC"));
+		return ZonedDateTime.now(ZoneOffset.UTC);
 	}
 }
diff --git a/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/vorgang/LockMapperTest.java b/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/vorgang/LockMapperTest.java
index 990b9432410674f86f32c3e2e2558fa0f31d4d43..2d0d9f17fa4c9435bc8b58674a41271867c9ae3b 100644
--- a/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/vorgang/LockMapperTest.java
+++ b/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/vorgang/LockMapperTest.java
@@ -26,7 +26,7 @@ package de.ozgcloud.vorgang.vorgang;
 import static org.assertj.core.api.Assertions.*;
 import static org.mockito.Mockito.*;
 
-import java.time.ZoneId;
+import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.time.temporal.ChronoUnit;
 import java.util.HashMap;
@@ -138,7 +138,7 @@ class LockMapperTest {
 		void shouldReturnCurrentTime() {
 			var lockedSince = mapper.getLockedSince();
 
-			assertThat(lockedSince).isCloseTo(ZonedDateTime.now(ZoneId.of("UTC")), within(2, ChronoUnit.SECONDS));
+			assertThat(lockedSince).isCloseTo(ZonedDateTime.now(ZoneOffset.UTC), within(2, ChronoUnit.SECONDS));
 		}
 	}
 }