diff --git a/frontend/index.html b/frontend/index.html
index 4a8deca..6363bfd 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -4,6 +4,7 @@
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests" />
     <link rel="icon" href="/favicon.ico">
     <link rel="stylesheet" href="/mystyles.css">
     <link rel="stylesheet" href="/custom.css">