diff --git a/composer.json b/composer.json
index 12e1d09..303238b 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "phpstan/phpstan-strict-rules": "1.4.4",
         "spaze/phpstan-disallowed-calls": "2.8.0",
         "shipmonk/phpstan-rules": "1.2.0",
-        "phpstan/phpstan-phpunit": "1.1.1",
+        "phpstan/phpstan-phpunit": "1.2.2",
         "php-parallel-lint/php-parallel-lint": "1.3.2",
         "nepada/coding-standard": "7.6.0"
     },