diff --git a/composer.json b/composer.json
index f12f10b..a14977c 100644
--- a/composer.json
+++ b/composer.json
@@ -42,11 +42,13 @@
     "ext-gmp": "Optional for performance."
   },
   "require-dev": {
-    "phpunit/phpunit": "^11.5.46|^12.5.2",
-    "phpstan/phpstan": "^2.1.33",
     "friendsofphp/php-cs-fixer": "^v3.92.2",
-    "symfony/polyfill-iconv": "^1.33",
-    "phpstan/phpstan-strict-rules": "^2.0"
+    "phpstan/phpstan": "^2.1.33",
+    "phpstan/phpstan-deprecation-rules": "^2.0",
+    "phpstan/phpstan-phpunit": "^2.0",
+    "phpstan/phpstan-strict-rules": "^2.0",
+    "phpunit/phpunit": "^11.5.46|^12.5.2",
+    "symfony/polyfill-iconv": "^1.33"
   },
   "autoload": {
     "psr-4": {
diff --git a/phpstan.neon b/phpstan.neon
index 2e9b252..c4e4b17 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -2,12 +2,32 @@ parameters:
     level: 7
     paths:
         - src
+        - tests
     reportUnmatchedIgnoredErrors: false
     ignoreErrors:
         - identifier: missingType.iterableValue
+          paths:
+              - src/Encryption.php
+              - src/MessageSentReport.php
+              - src/Notification.php
+              - src/Subscription.php
+              - src/Utils.php
+              - src/VAPID.php
+              - src/WebPush.php
+        - path: tests/
+          identifiers:
+            - argument.type
+            - closure.unusedUse
+            - foreach.valueOverwrite
+            - missingType.iterableValue
+            - property.dynamicName
+            - staticMethod.dynamicCall
     strictRules:
         booleansInConditions: false
         disallowedEmpty: false
 
 includes:
+    - vendor/phpstan/phpstan-deprecation-rules/rules.neon
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+    - vendor/phpstan/phpstan-phpunit/rules.neon
     - vendor/phpstan/phpstan-strict-rules/rules.neon
diff --git a/tests/PushServiceTest.php b/tests/PushServiceTest.php
index e2a24cb..e441047 100644
--- a/tests/PushServiceTest.php
+++ b/tests/PushServiceTest.php
@@ -55,7 +55,7 @@ public static function browserProvider(): array
     /**
      * Selenium tests are flakey so add retries.
      */
-    public function retryTest($retryCount, $test): void
+    public function retryTest(int $retryCount, callable $test): void
     {
         // just like above without checking the annotation
         for ($i = 0; $i < $retryCount; $i++) {
@@ -76,12 +76,12 @@ public function retryTest($retryCount, $test): void
      * Run integration tests with browsers
      */
     #[dataProvider('browserProvider')]
-    public function testBrowsers($browserId, $options): void
+    public function testBrowsers(string $browserId, array $options): void
     {
         $this->retryTest(2, $this->createClosureTest($browserId, $options));
     }
 
-    protected function createClosureTest($browserId, $options): callable
+    protected function createClosureTest(string $browserId, array $options): callable
     {
         return function () use ($browserId, $options): void {
             $this->webPush = new WebPush($options);
@@ -128,7 +128,6 @@ protected function createClosureTest($browserId, $options): callable
 
                 $subscription = new Subscription($endpoint, $p256dh, $auth, $contentEncoding);
                 $report = $this->webPush->sendOneNotification($subscription, $payload);
-                $this->assertInstanceOf(MessageSentReport::class, $report);
                 $this->assertTrue($report->isSuccess());
 
                 $dataString = json_encode([
@@ -160,7 +159,7 @@ protected function createClosureTest($browserId, $options): callable
         };
     }
 
-    private function getResponse($ch)
+    private function getResponse(CurlHandle $ch): mixed
     {
         $resp = curl_exec($ch);
 
diff --git a/tests/WebPushTest.php b/tests/WebPushTest.php
index b943fdb..f59f545 100644
--- a/tests/WebPushTest.php
+++ b/tests/WebPushTest.php
@@ -120,15 +120,15 @@ private static function setCiEnvironment(): void
         self::$keys['standard'] = $keys->{'p256dh'};
     }
 
-    /**
-     * @throws ErrorException
-     */
     public static function notificationProvider(): array
     {
         self::setUpBeforeClass(); // dirty hack of PHPUnit limitation
 
         return [
-            [new Subscription(self::$endpoints['standard'] ?: '', self::$keys['standard'] ?: '', self::$tokens['standard'] ?: ''), '{"message":"Comment ça va ?","tag":"general"}'],
+            [
+                new Subscription(self::$endpoints['standard'] ?? '', self::$keys['standard'] ?? '', self::$tokens['standard'] ?? ''),
+                '{"message":"Comment ça va ?","tag":"general"}',
+            ],
         ];
     }