diff --git a/themes/calcul/templates/base.html b/themes/calcul/templates/base.html
index c8c71f174285759e733acc009f7a4a13ba4e7943..8b04e31aa5fd99ee9106b8af587c6e4fbe57460b 100644
--- a/themes/calcul/templates/base.html
+++ b/themes/calcul/templates/base.html
@@ -7,9 +7,8 @@
     <meta http-equiv="content-type" content="text/html; charset=utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1">
 
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
-        integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
-
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css"
+        integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
 
     <link href="https://fonts.googleapis.com/css?family=Playfair+Display:400" rel="stylesheet">
     <link href="https://fonts.googleapis.com/css?family=Roboto:300:400,500,700" rel="stylesheet">
@@ -115,13 +114,11 @@
         </div>
     </footer>
 
-    <script src="https://code.jquery.com/jquery-3.3.1.min.js"
-        integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
-        integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
+    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
+        integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
         crossorigin="anonymous"></script>
-    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
-        integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js"
+        integrity="sha384-Piv4xVNRyMGpqkS2by6br4gNJ7DXjqk09RmUpJ8jgGtD7zP9yug3goQfGII0yAns"
         crossorigin="anonymous"></script>
 
     <script src="https://cdnjs.cloudflare.com/ajax/libs/trianglify/2.0.0/trianglify.min.js"></script>