diff --git a/composer.json b/composer.json
index 927cb6d..2d58f7c 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     ],
     "require": {
         "php": ">=5.2.4",
-        "twig/twig": "1.12.*",
+        "twig/twig": "1.18.*",
         "michelf/php-markdown": "1.3"
     },
     "autoload": {