diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 185c31210458aaef3971794e96e7f397cc8869ac..46c00c9265441664f2e26d711a523574576ebae8 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -7,6 +7,7 @@
 ### Bug fixes
 
 - [frontend] Adds missing break after "schedulinginfo ls" command
+- cta/CTA#999 Adds a default mount rule
 - cta/CTA#1003 The expansion of a repack request now fails if the archive route for archiving the repacked files is missing
 
 # v4.0-4