diff --git a/examples/zkapps/04-zkapp-browser-ui/ui/ghp-postbuild.js b/examples/zkapps/04-zkapp-browser-ui/ui/ghp-postbuild.js
index c3d722993..c678dfbc0 100644
--- a/examples/zkapps/04-zkapp-browser-ui/ui/ghp-postbuild.js
+++ b/examples/zkapps/04-zkapp-browser-ui/ui/ghp-postbuild.js
@@ -3,33 +3,23 @@ const path = require('path');
 
 // This script modifies the built CSS files and prepends the repo-name to the asset URLs.
 // to be compatible with github pages deployment.
-const cssDir = path.join(__dirname, '/.next/static/css');
-// Add your repository name here.
+const cssDir = path.join(__dirname, '/out/_next/static/css');
+// Update your repository name here if it is different from the project name.
 let repoURL = '04-zkapp-browser-ui';
-fs.readdir(cssDir, (err, files) => {
-  if (err) {
-    console.error(err);
-    process.exit(1);
-  }
+const files = fs.readdirSync(cssDir);
+
+files.forEach((file) => {
+  if (path.extname(file) === '.css') {
+    const filePath = path.join(cssDir, file);
+
+    const data = fs.readFileSync(filePath, 'utf8');
 
-  files.forEach(file => {
-    if (path.extname(file) === '.css') {
-      const filePath = path.join(cssDir, file);
-      fs.readFile(filePath, 'utf8', (err, data) => {
-        if (err) {
-          console.error(err);
-          process.exit(1);
-        }
-        
-        const result = data.replace(/url\(\//g, `url(/${repoURL}/`);
+    const singleQuoteRegex = new RegExp(`url\\(\\s*'\\/(?!${repoURL})`, 'g');
+    const doubleQuoteRegex = new RegExp(`url\\(\\s*"\\/(?!${repoURL})`, 'g');
 
-        fs.writeFile(filePath, result, 'utf8', err => {
-          if (err) {
-            console.error(err);
-            process.exit(1);
-          }
-        });
-      });
-    }
-  });
-});
+    let result = data.replace(singleQuoteRegex, `url('/${repoURL}/`);
+    result = result.replace(doubleQuoteRegex, `url("/${repoURL}/`);
+
+    fs.writeFileSync(filePath, result, 'utf8');
+  }
+});
\ No newline at end of file