diff --git a/index.html b/index.html
index e5b4baf..cfbcab6 100644
--- a/index.html
+++ b/index.html
@@ -42,7 +42,7 @@
 	<script>
 		// Basic Settings
 		const defaultTheme = 'darkly';
-		const bootswatchVersion = '5.3.1';
+		const bootswatchVersion = '5.3.3'; // Last updated: 7 March, 2024
 		// Update last one only when https://www.jsdelivr.com/package/npm/bootswatch is updated.
 
 		// Configure marked.js to use Github heading ID's to allow the Contents list to function