diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index cc1709defb..68c9312dfb 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -105,6 +105,7 @@ problems may have been fixed or changed somewhat since this was written.
 
  16. aws-sigv4
  16.1 aws-sigv4 does not sign requests with * correctly
+ 16.2 aws-sigv4 does not handle multipart/form-data correctly
  16.6 aws-sigv4 does not behave well with AWS VPC Lattice
 
  17. HTTP/2
@@ -614,6 +615,10 @@ problems may have been fixed or changed somewhat since this was written.
 
  https://github.com/curl/curl/issues/7559
 
+16.2 aws-sigv4 does not handle multipart/form-data correctly
+
+ https://github.com/curl/curl/issues/13351
+
 16.6 aws-sigv4 does not behave well with AWS VPC Lattice
 
  https://github.com/curl/curl/issues/11007