diff --git a/composer.json b/composer.json
index a9604af..8930b9d 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
   },
   "require-dev": {
     "ergebnis/composer-normalize": "2.25.1",
-    "phpstan/phpstan": "1.5.3",
+    "phpstan/phpstan": "1.5.4",
     "phpunit/phpunit": "9.5.19",
     "roave/security-advisories": "dev-latest"
   },