diff --git a/composer.json b/composer.json
index 9b64a8b..3c08bdd 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
         "friendsofphp/php-cs-fixer": "^2.14.2"
     },
     "require-dev": {
-        "phpspec/phpspec": "^3.4.0",
+        "phpspec/phpspec": "^5.1.0",
         "twig/twig": "^2.11.3",
         "webmozart/assert": "^1.3.0"
     },