diff --git a/gitlab4j-api/src/main/java/org/gitlab4j/api/utils/JacksonJson.java b/gitlab4j-api/src/main/java/org/gitlab4j/api/utils/JacksonJson.java
index 2e933935d..60a58c13c 100644
--- a/gitlab4j-api/src/main/java/org/gitlab4j/api/utils/JacksonJson.java
+++ b/gitlab4j-api/src/main/java/org/gitlab4j/api/utils/JacksonJson.java
@@ -3,12 +3,10 @@
 import java.io.IOException;
 import java.io.Reader;
 import java.text.ParseException;
-import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
-import java.util.TimeZone;
 
 import jakarta.ws.rs.Produces;
 import jakarta.ws.rs.core.MediaType;
@@ -45,14 +43,6 @@
 @Produces(MediaType.APPLICATION_JSON)
 public class JacksonJson extends JacksonJaxbJsonProvider implements ContextResolver<ObjectMapper> {
 
-    private static final SimpleDateFormat iso8601UtcFormat;
-
-    static {
-        iso8601UtcFormat = new SimpleDateFormat(ISO8601.UTC_PATTERN);
-        iso8601UtcFormat.setLenient(true);
-        iso8601UtcFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
-    }
-
     private final ObjectMapper objectMapper;
 
     public JacksonJson() {