diff --git a/modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala b/modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala
index 2e8d9ae..618daef 100644
--- a/modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala
+++ b/modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala
@@ -14,6 +14,7 @@ import io.quarkus.runtime.annotations.RegisterForReflection
     classOf[ClockDto],
     classOf[CreateGameRequestDto],
     classOf[ErrorEventDto],
+    classOf[GameWritebackEventDto],
     classOf[GameFullDto],
     classOf[GameFullEventDto],
     classOf[GameStateDto],