diff --git a/README.md b/README.md
index aaf5358..921bc9b 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,6 @@ To contribute new features or customize your deployment furthermore, see [here](
 - [x] Universal Webhook upgrade
 - [ ] i18n...? (maybe)
 - [ ] ICMP via proxy?
-- [ ] Add default UA
+- [x] Add default UA
 - [ ] Customizable footer
 - [ ] New header logo
diff --git a/components/OverallStatus.tsx b/components/OverallStatus.tsx
index 5212291..08ec053 100644
--- a/components/OverallStatus.tsx
+++ b/components/OverallStatus.tsx
@@ -99,7 +99,9 @@ export default function OverallStatus({
       {upcomingMaintenances.length > 0 && (
         <>
           <Title mt="4px" style={{ textAlign: 'center', color: '#70778c' }} order={5}>
-            {`${upcomingMaintenances.length} upcoming ${upcomingMaintenances.length === 1 ? 'maintenance' : 'maintenances'}`}{' '}
+            {`${upcomingMaintenances.length} upcoming ${
+              upcomingMaintenances.length === 1 ? 'maintenance' : 'maintenances'
+            }`}{' '}
             <span
               style={{ textDecoration: 'underline', cursor: 'pointer' }}
               onClick={() => setExpandUpcoming(!expandUpcoming)}
diff --git a/uptime.config.ts b/uptime.config.ts
index 85d7701..cf80328 100644
--- a/uptime.config.ts
+++ b/uptime.config.ts
@@ -13,7 +13,7 @@ const pageConfig: PageConfig = {
     { link: 'https://github.com/lyc8503', label: 'GitHub' },
     { link: 'https://blog.lyc8503.net/', label: 'Blog' },
     { link: 'mailto:me@lyc8503.net', label: 'Email Me', highlight: true },
-  ]
+  ],
 }
 
 const workerConfig: WorkerConfig = {
@@ -102,7 +102,7 @@ const workerConfig: WorkerConfig = {
     // notification will be sent only if the monitor is down for N continuous checks after the initial failure
     // if not specified, notification will be sent immediately
     gracePeriod: 5,
-  }
+  },
 }
 
 // You can define multiple maintenances here
diff --git a/worker/src/index.ts b/worker/src/index.ts
index 9e2d741..9791593 100644
--- a/worker/src/index.ts
+++ b/worker/src/index.ts
@@ -225,8 +225,13 @@ const Worker = {
               currentTimeSecond - currentIncident.start[0] <
                 workerConfig.notification.gracePeriod * 60 + 30)
           ) {
-            if (currentIncident.start[0] !== currentTimeSecond && workerConfig.notification?.skipErrorChangeNotification) {
-              console.log('Skipping notification for following error reason change due to user config')
+            if (
+              currentIncident.start[0] !== currentTimeSecond &&
+              workerConfig.notification?.skipErrorChangeNotification
+            ) {
+              console.log(
+                'Skipping notification for following error reason change due to user config'
+              )
             } else {
               await formatAndNotify(
                 monitor,
diff --git a/worker/src/monitor.ts b/worker/src/monitor.ts
index 339439f..4b69f24 100644
--- a/worker/src/monitor.ts
+++ b/worker/src/monitor.ts
@@ -280,9 +280,14 @@ export async function getStatus(
   } else {
     // HTTP endpoint monitor
     try {
+      let headers = new Headers(monitor.headers as any)
+      if (!headers.has('user-agent')) {
+        headers.set('user-agent', 'UptimeFlare/1.0 (+https://github.com/lyc8503/UptimeFlare)')
+      }
+
       const response = await fetchTimeout(monitor.target, monitor.timeout || 10000, {
         method: monitor.method,
-        headers: monitor.headers as any,
+        headers: headers,
         body: monitor.body,
         cf: {
           cacheTtlByStatus: {