diff --git a/composer.json b/composer.json
index 8b84f43..0a0c99b 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "phpstan/phpstan": "^2.1.11",
         "phpstan/phpstan-phpunit": "^2.0.6",
         "phpstan/phpstan-strict-rules": "^2.0.4",
-        "phpunit/phpunit": "^12.0.10",
+        "phpunit/phpunit": "^12.1.0",
         "slam/php-cs-fixer-extensions": "^3.12",
         "symfony/console": "^7.2.5"
     },
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index 3103387..23048c2 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -42,3 +42,15 @@ parameters:
 			count: 1
 			path: tests/ErrorHandlerTest.php
 
+		-
+			message: '#^Parameter \#1 \$filename of function file_get_contents expects string, string\|false given\.$#'
+			identifier: argument.type
+			count: 4
+			path: tests/ErrorHandlerTest.php
+
+		-
+			message: '#^Parameter \#1 \$filename of function filesize expects string, string\|false given\.$#'
+			identifier: argument.type
+			count: 2
+			path: tests/ErrorHandlerTest.php
+
diff --git a/tests/ErrorHandlerTest.php b/tests/ErrorHandlerTest.php
index a7e7301..5cf99c0 100644
--- a/tests/ErrorHandlerTest.php
+++ b/tests/ErrorHandlerTest.php
@@ -12,8 +12,6 @@
 
 final class ErrorHandlerTest extends TestCase
 {
-    private string $backupErrorLog;
-    private string $errorLog;
     private ErrorException $exception;
 
     /** @var list<array{subject: string, body: string}> */
@@ -23,11 +21,6 @@ final class ErrorHandlerTest extends TestCase
 
     protected function setUp(): void
     {
-        $this->backupErrorLog = (string) \ini_get('error_log');
-        $this->errorLog       = __DIR__ . \DIRECTORY_SEPARATOR . 'error_log_test';
-        \touch($this->errorLog);
-        \ini_set('error_log', $this->errorLog);
-
         $this->exception        = new ErrorException(\uniqid('normal_'), \E_USER_NOTICE);
         $this->errorHandler     = new ErrorHandler(function (string $subject, string $body): void {
             $this->emailsSent[] = [
@@ -43,8 +36,6 @@ protected function setUp(): void
     protected function tearDown(): void
     {
         \putenv('COLUMNS');
-        \ini_set('error_log', $this->backupErrorLog);
-        @\unlink($this->errorLog);
         if ($this->unregister) {
             \restore_exception_handler();
             \restore_error_handler();
@@ -138,7 +129,8 @@ public function testHandleWebExceptionWithDisplay(): void
 
         self::assertStringContainsString($this->exception->getMessage(), $output);
 
-        $errorLogContent = (string) \file_get_contents($this->errorLog);
+        self::expectErrorLog();
+        $errorLogContent = (string) \file_get_contents(\ini_get('error_log'));
         self::assertStringContainsString($this->exception->getMessage(), $errorLogContent);
     }
 
@@ -154,7 +146,8 @@ public function testHandleWebExceptionWithoutDisplay(): void
 
         self::assertStringNotContainsString($this->exception->getMessage(), $output);
 
-        $errorLogContent = (string) \file_get_contents($this->errorLog);
+        self::expectErrorLog();
+        $errorLogContent = (string) \file_get_contents(\ini_get('error_log'));
         self::assertStringContainsString($this->exception->getMessage(), $errorLogContent);
     }
 
@@ -164,7 +157,7 @@ public function testLogErrorAndException(): void
 
         $this->errorHandler->logException($this->exception);
 
-        self::assertSame(0, \filesize($this->errorLog));
+        self::assertSame(0, \filesize(\ini_get('error_log')));
 
         $this->errorHandler->setLogErrors(true);
 
@@ -172,7 +165,8 @@ public function testLogErrorAndException(): void
 
         $this->errorHandler->logException($exception);
 
-        $errorLogContent = (string) \file_get_contents($this->errorLog);
+        self::expectErrorLog();
+        $errorLogContent = (string) \file_get_contents(\ini_get('error_log'));
 
         self::assertStringContainsString($exception->getMessage(), $errorLogContent);
         self::assertStringContainsString($this->exception->getMessage(), $errorLogContent);
@@ -236,7 +230,8 @@ public function testErroriNellInvioDellaMailVengonoComunqueLoggati(): void
 
         $errorHandler->emailException($this->exception);
 
-        $errorLogContent = (string) \file_get_contents($this->errorLog);
+        self::expectErrorLog();
+        $errorLogContent = (string) \file_get_contents(\ini_get('error_log'));
         self::assertStringNotContainsString($this->exception->getMessage(), $errorLogContent);
         self::assertStringContainsString($mailError, $errorLogContent);
     }
@@ -323,7 +318,7 @@ public function testCanSetCustomErrorLogCallback(): void
 
         $this->errorHandler->logException($this->exception);
 
-        self::assertSame(0, \filesize($this->errorLog));
+        self::assertSame(0, \filesize(\ini_get('error_log')));
         self::assertStringContainsString($this->exception->getMessage(), \var_export($data, true));
     }
 }