diff --git a/docs/ui.go b/docs/ui.go
index 024b81e..05ab8bc 100644
--- a/docs/ui.go
+++ b/docs/ui.go
@@ -9,7 +9,7 @@ var ui = `
   <head>
     <meta charset="UTF-8">
     <title>Swagger UI</title>
-    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/3.20.5/swagger-ui.css" >
+    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/swagger-ui/4.15.5/swagger-ui.css" >
     <link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />
     <link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />
     <style>
