diff --git a/views/index.html b/views/index.html
index c988665..2a67287 100644
--- a/views/index.html
+++ b/views/index.html
@@ -4,7 +4,7 @@
   <meta content="text/html;charset=utf-8" http-equiv="Content-Type"/>
   <title>nar-serve</title>
   <link rel=stylesheet
-        href="https://cdnjs.cloudflare.com/ajax/libs/Primer/11.0.0/build.css">
+        href="https://cdnjs.cloudflare.com/ajax/libs/Primer/21.1.1/build.css">
 </head>
 <body>
   <div class="container-lg px-3 my-5 markdown-body">
