diff --git a/model/activity/activity.go b/model/activity/activity.go
index 92bf54ad..e5307454 100644
--- a/model/activity/activity.go
+++ b/model/activity/activity.go
@@ -98,6 +98,9 @@ const (
 
 	// TypeDraft records user marking space/document as draft
 	TypeDraft Type = 13
+
+	// TypeVersioned records user creating new document version
+	TypeVersioned Type = 14
 )
 
 // TypeName returns one-work descriptor for activity type