diff --git a/composer.json b/composer.json
index d7d7f89..1c4fc40 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     },
     "require-dev": {
         "infection/infection": "^0.18",
-        "mikey179/vfsstream": "1.6.11",
+        "mikey179/vfsstream": "1.6.12",
         "phpunit/phpunit": "~9.0"
     },
     "autoload": {