diff --git a/index.html b/index.html
index 5f90ae39..877455fa 100644
--- a/index.html
+++ b/index.html
@@ -37,6 +37,9 @@
 	<!-- JavaScript Library to Convert Markdown into HTML -->
 	<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
 
+	<!-- DOMPurify to sanitize HTML output -->
+	<script src="https://cdn.jsdelivr.net/npm/dompurify/dist/purify.min.js"></script>
+
 	<!-- Marked plugin to add heading ID's -->
 	<script src="https://cdn.jsdelivr.net/npm/marked-gfm-heading-id/lib/index.umd.js"></script>
 
@@ -53,7 +56,7 @@
 		fetch( 'https://raw.githubusercontent.com/offa/android-foss/master/README.md' )
 			.then( response => response.text() )
 			.then( data => {
-				document.querySelector( 'main' ).innerHTML = marked.parse( data );
+				document.querySelector( 'main' ).innerHTML = DOMPurify.sanitize( marked.parse( data ) );
 			})
 			.catch( error => console.error( 'Error:', error ) );