diff --git a/versions/3.1.1.md b/versions/3.1.1.md
index 26b2d107bf..01e2836be5 100644
--- a/versions/3.1.1.md
+++ b/versions/3.1.1.md
@@ -196,6 +196,9 @@ The `contentMediaType` keyword is redundant if the media type is already set:
 
 If the Schema Object will be processed by a non-OAS-aware JSON Schema implementation, it may be useful to include `contentMediaType` even if it is redundant.  However, if `contentMediaType` contradicts a relevant Media Type Object or Encoding Object, then `contentMediaType` SHALL be ignored.
 
+The `maxLength` keyword MAY be used to set an expected upper bound on the length of a streaming payload.  The keyword can be applied to either string data, including encoded binary data, or to unencoded binary data.  For unencoded binary, the length is the number of octets.
+
+##### Migrating binary descriptions from OAS 3.0
 The following table shows how to migrate from OAS 3.0 binary data descriptions, continuing to use `image/png` as the example binary media type:
 
 OAS < 3.1 | OAS 3.1 | Comments