diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index 97407e8d08..fce0509185 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -75,6 +75,7 @@ problems may have been fixed or changed somewhat since this was written.
  6.10 curl never completes Negotiate over HTTP
  6.11 Negotiate on Windows fails
  6.12 cannot use Secure Transport with Crypto Token Kit
+ 6.13 Negotiate against Hadoop HDFS
 
  7. FTP
  7.1 FTP without or slow 220 response
@@ -630,6 +631,10 @@ problems may have been fixed or changed somewhat since this was written.
 
  https://github.com/curl/curl/issues/7048
 
+6.13 Negotiate authentication against Hadoop HDFS
+
+ https://github.com/curl/curl/issues/8264
+
 7. FTP
 
 7.1 FTP without or slow 220 response