diff --git a/wo/cli/plugins/stack_pref.py b/wo/cli/plugins/stack_pref.py
index 1b0cd09..1eb8c1b 100644
--- a/wo/cli/plugins/stack_pref.py
+++ b/wo/cli/plugins/stack_pref.py
@@ -220,6 +220,11 @@ def post_pref(self, apt_packages, packages, upgrade=False):
                                   '{0}/locations-wo.conf'
                                   .format(ngxcom),
                                   'locations.mustache', data)
+                # traffic advice file
+                WOTemplate.deploy(self,
+                                  '/var/www/html/'
+                                  '.well-known/traffic-advice',
+                                  'traffic-advice.mustache', data)
 
                 WOTemplate.deploy(self,
                                   '{0}/wpsubdir.conf'
diff --git a/wo/cli/plugins/stack_upgrade.py b/wo/cli/plugins/stack_upgrade.py
index 43293bf..c9f2fb2 100644
--- a/wo/cli/plugins/stack_upgrade.py
+++ b/wo/cli/plugins/stack_upgrade.py
@@ -295,11 +295,11 @@ class WOStackUpgradeController(CementBaseController):
                     'ngxblocker'
                 ]]
 
-        if ((not (apt_packages)) and (not(packages))):
+        if not apt_packages and not packages:
             self.app.args.print_help()
         else:
             pre_stack(self)
-            if (apt_packages):
+            if apt_packages:
                 if not ("php7.2-fpm" in apt_packages or
                         "php7.3-fpm" in apt_packages or
                         "php7.4-fpm" in apt_packages or
@@ -340,7 +340,7 @@ class WOStackUpgradeController(CementBaseController):
                 Log.valide(self, "Configuring APT Packages")
                 # Post Actions after package updates
 
-            if (packages):
+            if packages:
                 if WOAptGet.is_selected(self, 'WP-CLI', packages):
                     WOFileUtils.rm(self, '/usr/local/bin/wp')
 
diff --git a/wo/cli/templates/locations.mustache b/wo/cli/templates/locations.mustache
index b637cfc..2edaaba 100644
--- a/wo/cli/templates/locations.mustache
+++ b/wo/cli/templates/locations.mustache
@@ -37,6 +37,13 @@ location /.well-known/acme-challenge/ {
    allow all;
    auth_basic off;
 }
+# Private Prefetch Proxy
+# https://developer.chrome.com/blog/private-prefetch-proxy/
+location /.well-known/traffic-advice {
+   types { } default_type "application/trafficadvice+json; charset=utf-8";
+   alias /var/www/html/.well-known/traffic-advice;
+   allow all;
+}
 # Return 403 forbidden for readme.(txt|html) or license.(txt|html) or example.(txt|html) or other common git repository files
 location ~*  "/(^$|readme|license|example|README|LEGALNOTICE|INSTALLATION|CHANGELOG)\.(txt|html|md)" {
     deny all;
diff --git a/wo/cli/templates/traffic-advice.mustache b/wo/cli/templates/traffic-advice.mustache
new file mode 100644
index 0000000..9e4f8b0
--- /dev/null
+++ b/wo/cli/templates/traffic-advice.mustache
@@ -0,0 +1,6 @@
+[{
+  "user_agent": "prefetch-proxy",
+  "google_prefetch_proxy_eap": {
+    "fraction": 1.0
+  }
+}]
\ No newline at end of file