diff --git a/index.html b/index.html
index b9c5031..c6fc99a 100644
--- a/index.html
+++ b/index.html
@@ -3,7 +3,7 @@
         <meta charset="UTF-8">
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=device-width, initial-scale=1">
-        <link rel="stylesheet" href="css/custom.css">
+        <link rel="stylesheet" href="css/custom.css?v=1.1">
         <link rel="stylesheet" href="css/bootstrap.css">
         <title>Genderwatch-protocol</title>