diff --git a/scripts/pagespeed-sitemap.ts b/scripts/pagespeed-sitemap.ts
index 902bcaa1..5c6b8e68 100644
--- a/scripts/pagespeed-sitemap.ts
+++ b/scripts/pagespeed-sitemap.ts
@@ -80,7 +80,23 @@ async function main() {
       Cookie: `klz_gatekeeper_session=${gatekeeperPassword}`,
     });
 
-    const chromePath = process.env.CHROME_PATH || process.env.PUPPETEER_EXECUTABLE_PATH;
+    // Detect Chrome path from Puppeteer installation if not provided
+    let chromePath = process.env.CHROME_PATH || process.env.PUPPETEER_EXECUTABLE_PATH;
+    if (!chromePath) {
+      try {
+        const puppeteerInfo = execSync('npx puppeteer browsers latest chrome', {
+          encoding: 'utf8',
+        });
+        const match = puppeteerInfo.match(/executablePath: (.*)/);
+        if (match && match[1]) {
+          chromePath = match[1].trim();
+          console.log(`🔍 Detected Puppeteer Chrome at: ${chromePath}`);
+        }
+      } catch (e) {
+        console.warn('⚠️ Could not detect Puppeteer Chrome path automatically.');
+      }
+    }
+
     const chromePathArg = chromePath ? `--collect.chromePath="${chromePath}"` : '';
 
     // Clean up old reports
@@ -90,7 +106,7 @@ async function main() {
 
     // Using a more robust way to execute and capture output
     // We remove 'npx lhci upload' to keep everything local and avoid Google-hosted reports
-    const lhciCommand = `npx lhci collect ${urlArgs} ${chromePathArg} --config=config/lighthouserc.json --collect.settings.extraHeaders='${extraHeaders}' --collect.settings.chromeFlags="--no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage" && npx lhci assert --config=config/lighthouserc.json`;
+    const lhciCommand = `CHROME_PATH="${chromePath}" npx lhci collect ${urlArgs} ${chromePathArg} --config=config/lighthouserc.json --collect.settings.extraHeaders='${extraHeaders}' --collect.settings.chromeFlags="--no-sandbox --disable-setuid-sandbox --disable-dev-shm-usage" && npx lhci assert --config=config/lighthouserc.json`;
 
     console.log(`💻 Executing LHCI...`);
 
@@ -98,6 +114,7 @@ async function main() {
       execSync(lhciCommand, {
         encoding: 'utf8',
         stdio: 'inherit',
+        env: { ...process.env, CHROME_PATH: chromePath },
       });
     } catch (err: any) {
       console.warn('⚠️ LHCI assertion finished with warnings or errors.');