diff --git a/composer.json b/composer.json
index 023deb7..fdd6877 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "php": ">=5.3.0",
         "symfony/framework-bundle": ">=3.0,<6.0",
         "symfony/form": ">=3.0,<6.0",
-        "twig/twig": ">=1.1<4.0",
+        "twig/twig": ">=1.1,<4.0",
         "ezyang/htmlpurifier": "~4.0"
     },
     "require-dev": {