diff --git a/disco/types/user.py b/disco/types/user.py
index ef65239..2997987 100644
--- a/disco/types/user.py
+++ b/disco/types/user.py
@@ -93,6 +93,7 @@ class ActivityTypes(object):
     STREAMING = 1
     LISTENING = 2
     WATCHING = 3
+    CUSTOM = 4
 
 
 class Status(object):