diff --git a/lib/workload_service/aggregates/task.ex b/lib/workload_service/aggregates/task.ex
index 6042322..ec25599 100644
--- a/lib/workload_service/aggregates/task.ex
+++ b/lib/workload_service/aggregates/task.ex
@@ -49,6 +49,7 @@ defmodule WorkloadService.Aggregates.Task do
 
       alias Commanded.Aggregates.Aggregate
 
+      @derive Jason.Encoder
       defstruct [
         :id,
         :application_id,