diff --git a/WorkflowRuntimeRunner.cs b/WorkflowRuntimeRunner.cs
index 432c5f8..ad4551a 100644
--- a/WorkflowRuntimeRunner.cs
+++ b/WorkflowRuntimeRunner.cs
@@ -1,3 +1,6 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
 namespace s8n_runtime;
 
 public class WorkflowRuntimeRunner