diff --git a/functions/api/links/update.js b/functions/api/links/update.js
index ecef833..a68d456 100644
--- a/functions/api/links/update.js
+++ b/functions/api/links/update.js
@@ -1,28 +1,88 @@
+const notify = (env, title, message, level = 1) =>
+  env.NTFY_TOPIC
+    ? fetch(`https://ntfy.sh/${env.NTFY_TOPIC}`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "text/plain",
+          Title: title,
+          Priority: String(level),
+        },
+        body: message,
+      }).catch(() => {})
+    : Promise.resolve();
+
 export async function onRequestPost({ request, env }) {
+  try {
+    const { "cf-turnstile-response": token, ...body } = await request.json();
+
+    const vR = await fetch(
+      "https://challenges.cloudflare.com/turnstile/v0/siteverify",
+      {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({
+          secret: env.TURNSTILE_KEY,
+          response: token,
+        }),
+      }
+    );
+
+    if (!(await vR.json()).success)
+      return new Response("CAPTCHA verification failed.", { status: 403 });
+
+    const {
+      slug,
+      destination_url,
+      analytics_enabled,
+      username,
+      pass_hash,
+    } = body;
+
+    if (!slug || !destination_url || !username || !pass_hash)
+      return new Response("Missing fields", { status: 400 });
+
+    const user = await env.D1_EV.prepare(
+      "SELECT pass_hash, custom_slugs FROM users WHERE username = ?"
+    )
+      .bind(username)
+      .first();
+
+    if (user?.pass_hash !== pass_hash)
+      return new Response("Invalid credentials", { status: 401 });
+
+    let slugs = [];
     try {
-        const { 'cf-turnstile-response': token, ...body } = await request.json();
-        const vR = await fetch("https://challenges.cloudflare.com/turnstile/v0/siteverify", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ secret: env.TURNSTILE_KEY, response: token }) });
-        if (!(await vR.json()).success) return new Response("CAPTCHA verification failed.", { status: 403 });
+      slugs = JSON.parse(user.custom_slugs);
+    } catch {}
 
-        const { slug, destination_url, analytics_enabled, username, pass_hash } = body;
-        if (!slug || !destination_url || !username || !pass_hash) return new Response("Missing fields", { status: 400 });
+    if (!Array.isArray(slugs) || !slugs.includes(slug))
+      return new Response("Unauthorized", { status: 403 });
 
-        const user = await env.D1_EV.prepare("SELECT pass_hash, custom_slugs FROM users WHERE username = ?").bind(username).first();
-        if (user?.pass_hash !== pass_hash) return new Response("Invalid credentials", { status: 401 });
+    let url = destination_url.startsWith("http")
+      ? destination_url
+      : `https://${destination_url}`;
 
-        let slugs = [];
-        try { slugs = JSON.parse(user.custom_slugs) } catch {}
-        if (!Array.isArray(slugs) || !slugs.includes(slug)) return new Response("Unauthorized", { status: 403 });
-
-        let url = destination_url.startsWith("http") ? destination_url : `https://${destination_url}`;
-        try { new URL(url) } catch { return new Response("Invalid destination URL", { status: 400 }) }
-
-        const dest_no_proto = url.replace(/^https?:\/\//, "");
-        const kvValue = analytics_enabled ? `✺${dest_no_proto}` : dest_no_proto;
-        
-        await env.KV_EV.put(slug, kvValue);
-        return Response.json({ success: true });
-    } catch (e) {
-        return new Response(e.message, { status: 500 });
+    try {
+      new URL(url);
+    } catch {
+      return new Response("Invalid destination URL", { status: 400 });
     }
+
+    const dest_no_proto = url.replace(/^https?:\/\//, "");
+    const kvValue = analytics_enabled ? `✺${dest_no_proto}` : dest_no_proto;
+
+    await env.KV_EV.put(slug, kvValue);
+
+    env.NTFY_TOPIC &&
+      notify(
+        env,
+        "4ev.link: link updated",
+        `user=${username} slug=${slug} dest=${dest_no_proto} analytics=${!!analytics_enabled}`,
+        1
+      );
+
+    return Response.json({ success: true });
+  } catch (e) {
+    return new Response(e.message, { status: 500 });
+  }
 }