diff --git a/docs/KNOWN_BUGS b/docs/KNOWN_BUGS
index 1bd0c92..6613aaf 100644
--- a/docs/KNOWN_BUGS
+++ b/docs/KNOWN_BUGS
@@ -100,6 +100,7 @@
  11.6 slow connect to localhost on Windows
  11.7 signal-based resolver timeouts
  11.8 DoH leaks memory after followlocation
+ 11.9 DoH doesn't inherit all transfer options
 
  12. LDAP and OpenLDAP
  12.1 OpenLDAP hangs after returning results
@@ -708,6 +709,10 @@
 
  https://github.com/curl/curl/issues/4592
 
+11.9 DoH doesn't inherit all transfer options
+
+ https://github.com/curl/curl/issues/4578
+
 12. LDAP and OpenLDAP
 
 12.1 OpenLDAP hangs after returning results