diff --git a/factorio_update.php b/factorio_update.php
index 0bc6cab..0017237 100644
--- a/factorio_update.php
+++ b/factorio_update.php
@@ -163,7 +163,9 @@ if($latest_version->isNewer($current_version)) { // neue Version verfügbar?
         echo PHP_EOL;
         $cli->sendTitle( "STARTE DAS ENTPACKEN DER NEUEN SERVER FILES", 1 );
 
-        exec("tar -xvf \"$download_output\" > /dev/null", $output, $return); // Entpacken
+        $unxz_download_output = preg_replace("/.tar.xz$/", ".tar", $download_output);
+
+        exec("unxz -vfd \"$download_output\" && tar -xvf \"$unxz_download_output\" > /dev/null", $output, $return); // Entpacken
 
         if($return === 0) {