diff --git a/app/models/system_note_metadata.rb b/app/models/system_note_metadata.rb
index 9a2640db9ca..a19755d286a 100644
--- a/app/models/system_note_metadata.rb
+++ b/app/models/system_note_metadata.rb
@@ -9,7 +9,7 @@ class SystemNoteMetadata < ApplicationRecord
   TYPES_WITH_CROSS_REFERENCES = %w[
     commit cross_reference
     close duplicate
-    moved
+    moved merge
   ].freeze
 
   ICON_TYPES = %w[
diff --git a/changelogs/unreleased/security-id-filter-timeline-activities-for-guests.yml b/changelogs/unreleased/security-id-filter-timeline-activities-for-guests.yml
new file mode 100644
index 00000000000..0fa5f89e2c0
--- /dev/null
+++ b/changelogs/unreleased/security-id-filter-timeline-activities-for-guests.yml
@@ -0,0 +1,5 @@
+---
+title: Show cross-referenced MR-id in issues' activities only to authorized users
+merge_request:
+author:
+type: security