diff --git a/scripts/service-health-check.py b/scripts/service-health-check.py
index 82b659e..57cd4f2 100644
--- a/scripts/service-health-check.py
+++ b/scripts/service-health-check.py
@@ -1,14 +1,9 @@
----
-
-# 14. scripts/service-health-check.py
-
-```python
 #!/usr/bin/env python3
 
+import json
 import socket
 import time
-import json
-from datetime import datetime
+from datetime import datetime, timezone
 
 SERVICES = [
     {"name": "Proxmox", "host": "10.10.30.250", "port": 8006},
@@ -18,6 +13,7 @@ SERVICES = [
     {"name": "Jellyfin", "host": "10.10.30.143", "port": 30013},
 ]
 
+
 def check_tcp(host, port, timeout=3):
     start = time.time()
 
@@ -25,33 +21,41 @@ def check_tcp(host, port, timeout=3):
         with socket.create_connection((host, port), timeout=timeout):
             latency_ms = round((time.time() - start) * 1000, 2)
             return True, latency_ms
-    except Exception:
+    except OSError:
         return False, None
 
+
+def utc_now():
+    return datetime.now(timezone.utc).isoformat()
+
+
 def main():
     results = []
 
     for service in SERVICES:
         online, latency = check_tcp(service["host"], service["port"])
 
-        results.append({
-            "name": service["name"],
-            "host": service["host"],
-            "port": service["port"],
-            "online": online,
-            "latency_ms": latency,
-            "checked_at": datetime.utcnow().isoformat() + "Z"
-        })
+        results.append(
+            {
+                "name": service["name"],
+                "host": service["host"],
+                "port": service["port"],
+                "online": online,
+                "latency_ms": latency,
+                "checked_at": utc_now(),
+            }
+        )
 
     summary = {
-        "checked_at": datetime.utcnow().isoformat() + "Z",
+        "checked_at": utc_now(),
         "total_services": len(results),
-        "online_services": sum(1 for r in results if r["online"]),
-        "offline_services": sum(1 for r in results if not r["online"]),
-        "services": results
+        "online_services": sum(1 for result in results if result["online"]),
+        "offline_services": sum(1 for result in results if not result["online"]),
+        "services": results,
     }
 
     print(json.dumps(summary, indent=2))
 
+
 if __name__ == "__main__":
     main()
\ No newline at end of file