diff --git a/composer.json b/composer.json
index 32be91d91..5ec4031be 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
 	},
 	"require-dev": {
 		"phpunit/phpunit": "^9.5",
-		"phan/phan": "^3.2.2",
+		"phan/phan": "^4.0",
 		"setasign/fpdf": "^1.8.2"
 	},
 	"suggest": {