diff --git a/change_log.txt b/change_log.txt
index b6bf544f..1d42b0a7 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,4 @@
-===== 3.1.31 ===== (23.11.2016)
+===== 3.1.31 ===== (14.12.2016)
   23.11.2016
    - move template object cache into static variables
 
diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 080f2566..57eedfb9 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -27,7 +27,7 @@
  * @author    Uwe Tews
  * @author    Rodney Rehm
  * @package   Smarty
- * @version   3.1.31-dev
+ * @version   3.1.31
  */
 
 /**
@@ -108,7 +108,7 @@ class Smarty extends Smarty_Internal_TemplateBase
     /**
      * smarty version
      */
-    const SMARTY_VERSION = '3.1.31-dev/47';
+    const SMARTY_VERSION = '3.1.31';
 
     /**
      * define variable scopes
diff --git a/utilities/BuildExpectedFiles.php b/utilities/BuildExpectedFiles.php
deleted file mode 100644
index b6c368d8..00000000
--- a/utilities/BuildExpectedFiles.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-/**
- * Created by PhpStorm.
- * User: Uwe Tews
- * Date: 25.10.2015
- * Time: 23:58
- */
-$sysplugins = array();
-$iterator = new DirectoryIterator(__DIR__ . '/../libs/sysplugins');
-foreach ($iterator as $file) {
-    if (!$file->isDot() && 'php' == $file->getExtension()) {
-        $filename = $file->getBasename();
-        $sysplugins[ $filename ] = true;
-    }
-}
-$plugins = array();
-$iterator = new DirectoryIterator(__DIR__ . '/../libs/plugins');
-foreach ($iterator as $file) {
-    if (!$file->isDot() && 'php' == $file->getExtension()) {
-        $filename = $file->getBasename();
-        $plugins[ $filename ] = true;
-    }
-}
-$code = file_get_contents(__DIR__ . '/../libs/sysplugins/smarty_internal_testinstall.php');
-$expectedPlugins = '$expectedPlugins = ' . var_export($plugins, true);
-$code = preg_replace('#\$expectedPlugins =[^;]+#', $expectedPlugins, $code);
-$expectedSysplugins = '$expectedSysplugins = ' . var_export($sysplugins, true);
-$code = preg_replace('#\$expectedSysplugins =[^;]+#', $expectedSysplugins, $code);
-file_put_contents(__DIR__ . '/../libs/sysplugins/smarty_internal_testinstall.php', $code);
-