diff --git a/composer.json b/composer.json
index a56e986..e8cd916 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,7 @@
     },
     "require-dev": {
         "cdn77/coding-standard": "^7.0",
-        "infection/infection": "^0.32.0",
+        "infection/infection": "^0.33.0",
         "kafkiansky/phpclick": "^0.3.0",
         "nyholm/psr7": "^1.2",
         "php-http/message-factory": "^1.1",