diff --git a/api/src/main/java/io/serverlessworkflow/api/workflow/Events.java b/api/src/main/java/io/serverlessworkflow/api/workflow/Events.java
index 24080e51..dd7a23ba 100644
--- a/api/src/main/java/io/serverlessworkflow/api/workflow/Events.java
+++ b/api/src/main/java/io/serverlessworkflow/api/workflow/Events.java
@@ -17,8 +17,9 @@
 
 import io.serverlessworkflow.api.events.EventDefinition;
 import java.util.List;
+import java.io.Serializable;
 
-public class Events {
+public class Events implements Serializable {
   private String refValue;
   private List<EventDefinition> eventDefs;