diff --git a/containers/backupchecks/src/backend/app/parsers/synology.py b/containers/backupchecks/src/backend/app/parsers/synology.py
index 8671df9..3164633 100644
--- a/containers/backupchecks/src/backend/app/parsers/synology.py
+++ b/containers/backupchecks/src/backend/app/parsers/synology.py
@@ -27,6 +27,10 @@ DSM_UPDATE_CANCELLED_PATTERNS = [
     "Auto Update has detected",
     "new version of DSM",
     "Update & Restore",
+    "belangrijke DSM-update",
+    "kritieke oplossingen",
+    "wordt automatisch geïnstalleerd",
+    "is beschikbaar op",
 ]
 
 _DSM_UPDATE_CANCELLED_HOST_RE = re.compile(
diff --git a/docs/changelog-claude.md b/docs/changelog-claude.md
index 7775c28..f5a116d 100644
--- a/docs/changelog-claude.md
+++ b/docs/changelog-claude.md
@@ -9,7 +9,7 @@ This file documents all changes made to this project via Claude Code.
 - Added "Preview orphaned jobs" button to show detailed list of jobs to be deleted with run/email counts before confirming deletion (verification step for safety)
 - Added "Generate test emails" feature in Settings → Maintenance with three separate buttons to create fixed test email sets (success/warning/error) in inbox for testing parsers and maintenance operations (each set contains exactly 3 Veeam Backup Job emails with the same job name "Test-Backup-Job" and different dates/objects/statuses for reproducible testing and proper status flow testing)
 - Added parser registry entry for Synology DSM automatic update cancelled notifications (backup software: Synology, backup type: Updates, informational only, no schedule learning)
-- Extended Synology DSM update parser with additional detection patterns ("Automatische DSM-update", "DSM-update op", "Packages on", "out-of-date", "Package Center", "new DSM update", "Auto Update has detected", "Update & Restore") and hostname extraction regex to recognize DSM update cancelled, out-of-date packages, and new update available notifications under same Updates job type while maintaining backward compatibility with existing patterns
+- Extended Synology DSM update parser with additional detection patterns ("Automatische DSM-update", "DSM-update op", "Packages on", "out-of-date", "Package Center", "new DSM update", "Auto Update has detected", "Update & Restore", "belangrijke DSM-update", "kritieke oplossingen", "wordt automatisch geïnstalleerd", "is beschikbaar op") and hostname extraction regex to recognize DSM update cancelled, out-of-date packages, new update available, and automatic installation announcements under same Updates job type while maintaining backward compatibility with existing patterns
 - Extended Synology Active Backup for Business parser to recognize skipped/ignored backup tasks ("genegeerd", "skipped", "ignored") as Warning status when backup was skipped due to previous backup still running
 
 ### Changed