diff --git a/data/event-schemas/schema/m.room.create.yaml b/data/event-schemas/schema/m.room.create.yaml
index 44c9c84e..429ac761 100644
--- a/data/event-schemas/schema/m.room.create.yaml
+++ b/data/event-schemas/schema/m.room.create.yaml
@@ -6,7 +6,9 @@ properties:
   content:
     properties:
       creator:
-        description: The `user_id` of the room creator. This is set by the homeserver.
+        description: |-
+          The `user_id` of the room creator. This is set by the homeserver for room versions 1 - 10. Room versions
+          11 no longer includes this property, the event `sender` should be used instead.
         type: string
       m.federate:
         description: Whether users on other servers can join this room. Defaults to `true` if key does not exist.
diff --git a/data/event-schemas/schema/m.room.redaction.yaml b/data/event-schemas/schema/m.room.redaction.yaml
index 143e7eff..454df0e8 100644
--- a/data/event-schemas/schema/m.room.redaction.yaml
+++ b/data/event-schemas/schema/m.room.redaction.yaml
@@ -5,12 +5,15 @@ description: 'This event is created by the server to describe which event has be
 properties:
   content:
     properties:
+      redacts: |-
+        description: The event ID that was redacted. Starting in room version 11.
+        type: string
       reason:
         description: 'The reason for the redaction, if any.'
         type: string
     type: object
   redacts:
-    description: The event ID that was redacted.
+    description: The event ID that was redacted. For room versions 1 - 10.
     type: string
   type:
     enum: