diff --git a/.gitignore b/.gitignore
index decc95a..aa26c5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,9 @@
 # Claude Code confidential files
 .claude/
+
+# Codex local workspace files
+.codex/
+
+# Python cache artifacts
+__pycache__/
+*.pyc
diff --git a/containers/backupchecks/src/backend/app/main/routes_shared.py b/containers/backupchecks/src/backend/app/main/routes_shared.py
index 217d1be..1818ee3 100644
--- a/containers/backupchecks/src/backend/app/main/routes_shared.py
+++ b/containers/backupchecks/src/backend/app/main/routes_shared.py
@@ -679,6 +679,8 @@ def _infer_schedule_map_from_runs(job_id: int):
                 return schedule
             if bs == 'qnap' and bt == 'firmware update':
                 return schedule
+            if bs == '3cx' and bt == 'update':
+                return schedule
             if bs == 'syncovery' and bt == 'syncovery':
                 return schedule
     except Exception:
@@ -994,4 +996,3 @@ def _next_ticket_code(now_utc: datetime) -> str:
             seq = 1
 
     return f"{prefix}{seq:04d}"
-
diff --git a/containers/backupchecks/src/backend/app/parsers/threecx.py b/containers/backupchecks/src/backend/app/parsers/threecx.py
index a56ee93..9d6f56b 100644
--- a/containers/backupchecks/src/backend/app/parsers/threecx.py
+++ b/containers/backupchecks/src/backend/app/parsers/threecx.py
@@ -24,6 +24,10 @@ def try_parse_3cx(msg: MailMessage) -> Tuple[bool, Dict, List[Dict]]:
       - SSL Certificate Renewal (informational)
         Subject: '3CX Notification: SSL Certificate Renewal - <host>'
         Body contains an informational message about the renewal.
+
+      - Update Successful (informational)
+        Subject: '3CX Notification: Update Successful - <host>'
+        Body confirms update completion and healthy services.
     """
     subject = (msg.subject or "").strip()
     if not subject:
@@ -38,11 +42,16 @@ def try_parse_3cx(msg: MailMessage) -> Tuple[bool, Dict, List[Dict]]:
         subject,
         flags=re.IGNORECASE,
     )
+    m_update = re.match(
+        r"^3CX Notification:\s*Update Successful\s*-\s*(.+)$",
+        subject,
+        flags=re.IGNORECASE,
+    )
 
-    if not m_backup and not m_ssl:
+    if not m_backup and not m_ssl and not m_update:
         return False, {}, []
 
-    job_name = (m_backup or m_ssl).group(1).strip()
+    job_name = (m_backup or m_ssl or m_update).group(1).strip()
 
     body = (getattr(msg, "text_body", None) or getattr(msg, "body", None) or "")
     if not body:
@@ -60,6 +69,17 @@ def try_parse_3cx(msg: MailMessage) -> Tuple[bool, Dict, List[Dict]]:
         }
         return True, result, []
 
+    # Update successful: store as tracked informational run
+    if m_update:
+        result = {
+            "backup_software": "3CX",
+            "backup_type": "Update",
+            "job_name": job_name,
+            "overall_status": "Success",
+            "overall_message": body or None,
+        }
+        return True, result, []
+
     # Backup complete
     backup_file = None
     m_file = re.search(r"^\s*Backup\s+name\s*:\s*(.+?)\s*$", body, flags=re.IGNORECASE | re.MULTILINE)
diff --git a/docs/changelog-claude.md b/docs/changelog-claude.md
index 20583f0..979c844 100644
--- a/docs/changelog-claude.md
+++ b/docs/changelog-claude.md
@@ -12,6 +12,7 @@ This file documents all changes made to this project via Claude Code.
 - Approved Jobs import now only applies `autotask_company_id` and `autotask_company_name` when the import option is checked
 - Customers CSV import now only applies Autotask mapping fields when the import option is checked
 - Import success and audit output now includes whether Autotask IDs were imported
+- 3CX parser now recognizes `3CX Notification: Update Successful - <host>` as an informational run with `backup_software: 3CX`, `backup_type: Update`, and `overall_status: Success`, and excludes this type from schedule inference (no Expected/Missed generation)
 
 ## [2026-02-16]