diff --git a/src/simpleguardhome/templates/index.html b/src/simpleguardhome/templates/index.html
index 87e125f..bb5e98c 100644
--- a/src/simpleguardhome/templates/index.html
+++ b/src/simpleguardhome/templates/index.html
@@ -5,10 +5,11 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>SimpleGuardHome</title>
     <script src="https://cdn.tailwindcss.com"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/2.3.4/purify.min.js"></script>
     <script>
         async function checkDomain(event) {
             event.preventDefault();
-            const domain = document.getElementById('domain').value;
+            const domain = DOMPurify.sanitize(document.getElementById('domain').value);
             const resultDiv = document.getElementById('result');
             const unblockDiv = document.getElementById('unblock-action');
             const submitBtn = document.getElementById('submit-btn');