diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index c9beb28361..d4e4423094 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -43,6 +43,7 @@ problems may have been fixed or changed somewhat since this was written.
  5.15 Unicode on Windows
 
  6. Authentication
+ 6.1 Digest auth-int for PUT/POST
  6.2 MIT Kerberos for Windows build
  6.3 NTLM in system context uses wrong name
  6.5 NTLM does not support password with Unicode 'SECTION SIGN' character
@@ -301,6 +302,10 @@ problems may have been fixed or changed somewhat since this was written.
 
 6. Authentication
 
+6.1 Digest auth-int for PUT/POST
+
+ We do not support auth-int for Digest using PUT or POST
+
 6.2 MIT Kerberos for Windows build
 
  libcurl fails to build with MIT Kerberos for Windows (KfW) due to KfW's