diff --git a/npm_install.py b/npm_install.py
index 72a43cd..ad00dbd 100644
--- a/npm_install.py
+++ b/npm_install.py
@@ -170,6 +170,28 @@ def write_resolvers_conf(ipv6_enabled: bool):
     content = f"resolver {' '.join(ips)} valid=10s{ipv6_flag};\n"
     write_file(Path("/etc/angie/conf.d/include/resolvers.conf"), content, 0o644)
 
+
+def comment_x_served_by_step(path="/etc/angie/conf.d/include/proxy.conf"):
+    p = Path(path)
+    if not p.exists():
+        raise FileNotFoundError(path)
+    src = p.read_text()
+    pattern = re.compile(r'^(?P<ws>\s*)(?!#)\s*add_header\s+X-Served-By\s+\$host\s*;\s*$', re.MULTILINE)
+    count = len(pattern.findall(src))
+    if count == 0:
+        return 0
+    backup = p.with_suffix(p.suffix + ".bak")
+    shutil.copy2(p, backup)
+    out = pattern.sub(lambda m: f"{m.group('ws')}# add_header       X-Served-By $host;", src)
+    fd, tmp = tempfile.mkstemp(dir=str(p.parent))
+    os.close(fd)
+    Path(tmp).write_text(out)
+    shutil.copymode(p, tmp)
+    os.replace(tmp, p)
+    print(f"✔ Commented {count} line(s) | backup: {backup}")
+    return count
+
+
 def download_extract_tar_gz(url: str, dest_dir: Path) -> Path:
     dest_dir.mkdir(parents=True, exist_ok=True)
     with step("Downloading and untaring"):
@@ -1332,6 +1354,8 @@ def main():
     install_logrotate_for_data_logs()
     fix_logrotate_permissions_and_wrapper()
     sync_backup_nginx_conf()
+    comment_x_served_by_step()
+    
     with step("Restarting services after installation"):
         run(["systemctl","restart","angie.service"], check=False)
         run(["systemctl","restart","npm.service"], check=False)