diff --git a/src/main/java/de/ph87/tools/tools/numbers/Numbers.java b/src/main/java/de/ph87/tools/tools/numbers/Numbers.java
index e48c742..96af1e6 100644
--- a/src/main/java/de/ph87/tools/tools/numbers/Numbers.java
+++ b/src/main/java/de/ph87/tools/tools/numbers/Numbers.java
@@ -44,6 +44,7 @@ public class Numbers extends NumbersAbstract {
   private ZonedDateTime date = ZonedDateTime.now();
 
   @NonNull
+  @OrderColumn
   @OneToMany(orphanRemoval = true)
   private List<UserReference> users;