diff --git a/account-dao/src/main/java/de/muehlencord/shared/account/dao/ApiKeyObject.java b/account-dao/src/main/java/de/muehlencord/shared/account/dao/ApiKeyObject.java
index 004efbc..9089648 100644
--- a/account-dao/src/main/java/de/muehlencord/shared/account/dao/ApiKeyObject.java
+++ b/account-dao/src/main/java/de/muehlencord/shared/account/dao/ApiKeyObject.java
@@ -17,6 +17,7 @@ package de.muehlencord.shared.account.dao;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.google.gson.annotations.Expose;
+import java.io.Serializable;
 import java.util.Date;
 import java.util.Objects;
 
@@ -24,15 +25,15 @@ import java.util.Objects;
  *
  * @author Joern Muehlencord <joern at muehlencord.de>
  */
-public class ApiKeyObject  {
+public class ApiKeyObject implements Serializable {
 
     @Expose
     private String userName;
     @Expose
-    @JsonFormat(shape = JsonFormat.Shape.STRING, locale="en_US", timezone = "UTC", pattern="yyyy-MM-dd'T'HH:mm:ss'Z'")
+    @JsonFormat(shape = JsonFormat.Shape.STRING, locale = "en_US", timezone = "UTC", pattern = "yyyy-MM-dd'T'HH:mm:ss'Z'")
     private Date issuedOn;
     @Expose
-    @JsonFormat(shape = JsonFormat.Shape.STRING, locale="en_US", timezone = "UTC", pattern="yyyy-MM-dd'T'HH:mm:ss'Z]'")
+    @JsonFormat(shape = JsonFormat.Shape.STRING, locale = "en_US", timezone = "UTC", pattern = "yyyy-MM-dd'T'HH:mm:ss'Z'")
     private Date expiresOn;
     @Expose
     private String authToken;
@@ -99,7 +100,5 @@ public class ApiKeyObject  {
         }
         return true;
     }
-    
-    
 
 }