diff --git a/app/templates/layouts/base.html b/app/templates/layouts/base.html
index e7c7823..ffb20ae 100644
--- a/app/templates/layouts/base.html
+++ b/app/templates/layouts/base.html
@@ -7,6 +7,7 @@
 
     <meta charset="utf-8">
     <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="{{ url_for('static', path='assets/img/favicons/favicon-32x32.png') }}" sizes="32x32" type="image/png">
     <link rel="icon" href="{{ url_for('static', path='assets/img/favicons/favicon-16x16.png') }}" sizes="16x16" type="image/png">