diff --git a/index.html b/index.html
index 5f90ae39..0521673f 100644
--- a/index.html
+++ b/index.html
@@ -35,10 +35,10 @@
 	<main></main>
 
 	<!-- JavaScript Library to Convert Markdown into HTML -->
-	<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
+	<script src="https://cdn.jsdelivr.net/npm/marked@15.0.7/marked.min.js" integrity="sha384-9jGynGSsLkHfSzGMqOA/gE6Dvxopm/kGIMXfiYYMOiMkjlMCqjBGhlT5HYXQFXU" crossorigin="anonymous"></script>
 
 	<!-- Marked plugin to add heading ID's -->
-	<script src="https://cdn.jsdelivr.net/npm/marked-gfm-heading-id/lib/index.umd.js"></script>
+	<script src="https://cdn.jsdelivr.net/npm/marked-gfm-heading-id@4.1.1/lib/index.umd.js" integrity="sha384-WMfwP/V+V0VYwCHBfBfgPC4F/kZ38TVrAlKHqbFMFr2PE4nFxvjG7xaFRbRTCKSS" crossorigin="anonymous"></script>
 
 	<script>
 		// Basic Settings