diff --git a/src/main/java/io/spring/issuebot/github/Event.java b/src/main/java/io/spring/issuebot/github/Event.java
index d58f114..08efa30 100644
--- a/src/main/java/io/spring/issuebot/github/Event.java
+++ b/src/main/java/io/spring/issuebot/github/Event.java
@@ -74,6 +74,11 @@ public class Event {
 		 */
 		SUBSCRIBED("subscribed"),
 
+		/**
+		 * The actor unsubscribed from receibing notifications for an issue.
+		*/
+		UNSUBSCRIBED("unsubscribed"),
+
 		/**
 		 * The issue was merged by the actor.
 		 */