diff --git a/chatto/src/main/resources/templates/fragments/head.html b/chatto/src/main/resources/templates/fragments/head.html
index 0880e88..768e113 100644
--- a/chatto/src/main/resources/templates/fragments/head.html
+++ b/chatto/src/main/resources/templates/fragments/head.html
@@ -4,27 +4,41 @@
 <head>
     <th:block th:fragment="headFragment">
 
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/sprintf/1.1.2/sprintf.min.js" type="text/javascript"></script>
         <meta name="viewport" content="width=device-width, initial-scale=1.0">
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/js/bootstrap.bundle.js"></script>
-        <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.js"></script>
 
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.css">
-        <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.css" rel="stylesheet" type="text/css">
-        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.min.css">
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/sprintf/1.1.2/sprintf.min.js" integrity="sha256-6rSEKvygjVuveLg6nGaMMD+9XTlJrDHGq8eDuxHlFyA=" crossorigin="anonymous"></script>
+
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
+
+        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha256-L/W5Wfqfa0sdBNIKN9cG6QA5F2qx4qICmU2VgLruv9Y=" crossorigin="anonymous" />
+        
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/js/bootstrap.bundle.min.js" integrity="sha256-OUFW7hFO0/r5aEGTQOz9F/aXQOt+TwqI1Z4fbVvww04=" crossorigin="anonymous"></script>
+
+        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.min.css" integrity="sha256-+N4/V/SbAFiW1MPBCXnfnP9QSN3+Keu+NlB+0ev/YKQ=" crossorigin="anonymous" />
+
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.bundle.min.js" integrity="sha256-TQq84xX6vkwR0Qs1qH5ADkP+MvH0W+9E7TdHJsoIQiM=" crossorigin="anonymous"></script>
 
         <script src="https://cdnjs.cloudflare.com/ajax/libs/sjcl/1.0.8/sjcl.min.js" integrity="sha256-nIoG9XIePM1QNttI6KAGLYGNxc4DNinxxmOZW0/Z7uA=" crossorigin="anonymous"></script>
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.4.2/handlebars.min.js" integrity="sha256-oh7N5nthuhldTk8/34Za7FXv3BkeVN9vAnYk/pLfC78=" crossorigin="anonymous"></script>
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/dompurify/2.0.3/purify.min.js" integrity="sha256-58eGKW6SunbeAY1RP9WEbg3nViB9o1qDnxV4yCITqx4=" crossorigin="anonymous"></script>
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/markdown-it/10.0.0/markdown-it.min.js"></script>
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/AlertifyJS/1.12.0/alertify.min.js" integrity="sha256-yscIZgtlDR9q6eoYCRmcaiNE6W80UFSnq+6Llwu4NLI=" crossorigin="anonymous"></script>
+
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/AlertifyJS/1.12.0/css/alertify.min.css" integrity="sha256-nhstgDCuZGQRk+wvwXZIPt278arHtuZKJ1YQ0rrXiL4=" crossorigin="anonymous" />
+
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/AlertifyJS/1.12.0/css/themes/default.css" integrity="sha256-dawRQVhnqw8jRXaGnK0aj/NpOsPaQm+Em1sWN+fvegI=" crossorigin="anonymous" />
+
         <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/AlertifyJS/1.12.0/css/themes/bootstrap.css" integrity="sha256-1fgYpB3cyITZIur7E+Mj3R54NtlN9HwHykgKTJf0pmU=" crossorigin="anonymous" />
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/fuse.js/3.4.5/fuse.min.js" integrity="sha256-Yrh3VGzE4d9b4KANknPJAhfcKt9SgHTL0v/FrJFoPzw=" crossorigin="anonymous"></script>
+
         <script src="https://cdnjs.cloudflare.com/ajax/libs/loglevel/1.6.4/loglevel.min.js" integrity="sha256-ACTlnmNCkOooSKkPCKYbiex8WLE82aeiN+Z9ElZag5Q=" crossorigin="anonymous"></script>
 
+
         <link th:href="@{/css/master.css}" href="../../resources/static/css/master.css" rel="stylesheet">
         <link th:href="@{/css/colors.css}" href="../../resources/static/css/colors.css" rel="stylesheet">
 
