diff --git a/composer.json b/composer.json
index b4f7625..80134c1 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,7 @@
         "orchestra/testbench": "^9.0",
         "phpstan/phpstan": "^1.10",
         "phpstan/phpstan-mockery": "^1.1",
+        "phpstan/phpstan-phpunit": "^1.4",
         "phpunit/phpunit": "^11.0",
         "staudenmeir/eloquent-json-relations": "^1.11",
         "staudenmeir/laravel-adjacency-list": "^1.21"
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 7dd51b3..ece647c 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -1,6 +1,8 @@
 includes:
     - ./vendor/larastan/larastan/extension.neon
     - ./vendor/phpstan/phpstan-mockery/extension.neon
+    - ./vendor/phpstan/phpstan-phpunit/extension.neon
+    - ./vendor/phpstan/phpstan-phpunit/rules.neon
 parameters:
     level: 5
     paths:
@@ -9,3 +11,4 @@ parameters:
     treatPhpDocTypesAsCertain: false
     ignoreErrors:
         - '#Unsafe usage of new static\(\).#'
+        - '#Parameter \#\d+ \$relations of method Illuminate\\Database\\Eloquent\\Collection<[^>]+\>::load\(\) expects#'