diff --git a/core/src/site/site.xml b/core/src/site/site.xml
index 4007e34aab89..76faf2e946cc 100644
--- a/core/src/site/site.xml
+++ b/core/src/site/site.xml
@@ -6,7 +6,7 @@
         </breadcrumbs>
         <head>
             <![CDATA[
-                <script src="https://cdn.jsdelivr.net/npm/lit@3.0.2/polyfill-support.js"></script>
+                <script src="https://cdn.jsdelivr.net/npm/lit@3.1.0/polyfill-support.js"></script>
                 <script src="https://cdn.jsdelivr.net/npm/@webcomponents/webcomponentsjs@2.8.0/webcomponents-loader.js"></script>
                 <script data="jio" src="https://cdn.jsdelivr.net/npm/@jenkinsci/jenkins-io-components/+esm" type="module"></script>
                 <script data="jio" nomodule="" src="https://cdn.jsdelivr.net/npm/@jenkinsci/jenkins-io-components"></script>
