diff --git a/composer.json b/composer.json
index 12418f7..61d33a5 100644
--- a/composer.json
+++ b/composer.json
@@ -32,8 +32,8 @@
     "require-dev": {
         "ergebnis/composer-normalize": ">=2.19 <2.30",
         "phan/phan": "^5.4.2",
-        "phpstan/phpstan": "^1.0",
-        "phpstan/phpstan-strict-rules": "^1.0",
+        "phpstan/phpstan": "^1.12",
+        "phpstan/phpstan-strict-rules": "^1.12",
         "phpunit/phpunit": "^7.5.20 || ^8.5.36 || ^9.6.15",
         "psalm/plugin-phpunit": "^0.18",
         "vimeo/psalm": "^5.26"