diff --git a/_templates/404.html b/_templates/404.html
index fbfcbdf56b766c585cb37e321fed8028f4524571..4215fbdfeb8c48cfa8a37201a29a1eafe1f3771b 100644
--- a/_templates/404.html
+++ b/_templates/404.html
@@ -10,7 +10,7 @@
     let currentUrl = window.location.href;
 
     // Flag to check if valid redirect is found
-    let redirectFount = false;
+    let redirectFound = false;
 
     // Iterate over the redirect_folders key-value pairs
     for (const [key, value] of Object.entries(redirectFolders)) {
@@ -27,8 +27,8 @@
                 .then(response => {
                     if (response.ok) {
                         // Valid redirect is found
-                        let redirectFount = true;
-                        
+                        let redirectFound = true;
+
                         // Update the heading with the correct information
                         const headingElement = document.getElementById('pageHeading');
                         if (headingElement) {
@@ -75,7 +75,7 @@
                                 clearInterval(countdownInterval);
                                 window.location.href = newUrl;
                             }
-                        }, 1000);
+                        }, 1000);5.4
 
                         // Event listener for "Redirect Now" button
                         document.getElementById('redirectNow').addEventListener('click', () => {
@@ -102,7 +102,7 @@
         }
     }
 
-    if (!redirectFount) {
+    if (!redirectFound) {
         // In case the link test doesn't include redirectFolders
         const headingElement = document.getElementById('pageHeading');
         if (headingElement) {
diff --git a/requirements.txt b/requirements.txt
index 592ffd72b3f452f0edee1459f1ca7bdce1335c8d..5611468cb89a0ba4c0527e14fd59cea45a30898f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ snowballstemmer==2.2.0
 Sphinx==7.2.6
 sphinx-autobuild==2021.3.14
 sphinx-copybutton==0.5.2
-pydata-sphinx-theme==0.15.4
+pydata-sphinx-theme==0.16
 sphinx-serve==1.0.1
 sphinx-tabs==3.4.4
 sphinx_design==0.5.0