diff --git a/go.mod b/go.mod
index 858c740..b4cd737 100755
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module zlh-agent
 
-go 1.21.6
+go 1.26.2
 
 require github.com/creack/pty v1.1.21
 
diff --git a/logs/agent.log b/logs/agent.log
index 714ee24..732c1b8 100644
--- a/logs/agent.log
+++ b/logs/agent.log
@@ -513,3 +513,41 @@
 2026/04/18 21:01:44 [update] periodic checks enabled (mode=notify interval=30m0s)
 2026/04/18 21:01:44 [agent] listening on :18888
 2026/04/18 21:02:04 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 21:32:14 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 21:47:43 [agent] shutdown signal received
+2026/04/18 21:47:43 [agent] http server stopped gracefully
+2026/04/18 21:47:43 [agent] exiting
+2026/04/18 21:47:43 [agent] file logging enabled
+2026/04/18 21:47:43 [agent] lifecycle logging enabled
+2026/04/18 21:47:43 [agent] routes registered
+2026/04/18 21:47:43 [autostart] disabled (ok)
+2026/04/18 21:47:43 [update] periodic checks enabled (mode=notify interval=30m0s)
+2026/04/18 21:47:43 [agent] listening on :18888
+2026/04/18 21:48:03 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 22:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 22:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 23:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/18 23:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 00:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 00:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 01:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 01:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 02:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 02:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 03:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 03:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 04:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 04:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 05:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 05:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 06:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 06:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 07:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 07:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 08:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 08:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 09:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 09:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 10:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 10:48:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
+2026/04/19 11:18:13 [update] notify check failed status=error current=0.0.0-dev target= err=Get "http://zlh-artifacts.internal.zlh:8080/agents/manifest.json": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
diff --git a/state/update.json b/state/update.json
index bf19a79..cc0a30e 100644
--- a/state/update.json
+++ b/state/update.json
@@ -2,5 +2,5 @@
   "status": "error",
   "current": "0.0.0-dev",
   "error": "Get \"http://zlh-artifacts.internal.zlh:8080/agents/manifest.json\": context deadline exceeded (Client.Timeout exceeded while awaiting headers)",
-  "checked_at_utc": "2026-04-18T21:01:54Z"
+  "checked_at_utc": "2026-04-19T11:18:03Z"
 }
\ No newline at end of file
diff --git a/zlh-agent b/zlh-agent
index 1eee8f8..abcfcec 100755
Binary files a/zlh-agent and b/zlh-agent differ