diff --git a/pom.xml b/pom.xml
index dda0b81fadb58825ab12c20a13a16e7d5e345ba4..03299c75425e36167d1a8ee87241697930e6ec5d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -86,8 +86,8 @@
 			<artifactId>spring-webflux</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>com.fasterxml.jackson.datatype</groupId>
-			<artifactId>jackson-datatype-jsr310</artifactId>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-json</artifactId>
 		</dependency>
 		
 		<!-- commons -->
diff --git a/src/main/java/de/ozgcloud/processor/vorgang/Vorgang.java b/src/main/java/de/ozgcloud/processor/vorgang/Vorgang.java
index ff373602653ec7adbe30c9268ad5880b5aa13443..b89e766fe37a08d2c973c0f078811dadf1dba57f 100644
--- a/src/main/java/de/ozgcloud/processor/vorgang/Vorgang.java
+++ b/src/main/java/de/ozgcloud/processor/vorgang/Vorgang.java
@@ -24,7 +24,6 @@
 package de.ozgcloud.processor.vorgang;
 
 import java.time.ZonedDateTime;
-import java.util.Objects;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonProperty.Access;
@@ -63,11 +62,6 @@ public class Vorgang {
 		private String event;
 		private String status;
 		private ZonedDateTime createdAt;
-
-		@JsonProperty
-		public String getCreatedAt() {
-			return Objects.isNull(createdAt) ? null : createdAt.toString();
-		}
 	}
 
 	public Vorgang withEvent(String event) {