diff --git a/projects/demo/src/index.html b/projects/demo/src/index.html
index 89f290eeb2b1..a80934325464 100644
--- a/projects/demo/src/index.html
+++ b/projects/demo/src/index.html
@@ -93,6 +93,10 @@
             rel="apple-touch-icon"
             sizes="180x180"
         />
+        <meta
+            content="Cache-Control: max-age=31536000"
+            http-equiv="Cache-control"
+        />
         <link
             href="assets/favicon-32x32.png"
             rel="icon"