diff --git a/09.md b/09.md
index dac74938..c23e65e9 100644
--- a/09.md
+++ b/09.md
@@ -8,7 +8,7 @@ Event Deletion
 
 Event kind `5` describes a deletion event. It MUST contain a list of one or more `e` or `a` tags, each referencing the events the author is requesting to be deleted.
 
-The `.content` MAY contain the reason for the deletion.
+The `.content` MAY contain the reason for the deletion. An optional `k` tag MAY be added to describe the kind of the referenced events. 
 
 ```
 {
@@ -17,6 +17,7 @@ The `.content` MAY contain the reason for the deletion.
   "tags": [
     ["e", "dcd59..464a2"],
     ["e", "968c5..ad7a4"],
+    ["k", "<kind>"],
     ["a", "<kind>:<pubkey>:<d-identifier>"]
   ],
   "content": "these posts were published by accident",