diff --git a/Tests/Factory/HttpFoundationFactoryTest.php b/Tests/Factory/HttpFoundationFactoryTest.php
index ed2b7e9..e40992e 100644
--- a/Tests/Factory/HttpFoundationFactoryTest.php
+++ b/Tests/Factory/HttpFoundationFactoryTest.php
@@ -172,7 +172,7 @@ public function testCreateUploadedFile()
         $symfonyUploadedFile = $this->callCreateUploadedFile($uploadedFile);
         $size = $symfonyUploadedFile->getSize();
 
-        $uniqid = uniqid();
+        $uniqid = uniqid('', true);
         $symfonyUploadedFile->move($this->tmpDir, $uniqid);
 
         $this->assertEquals($uploadedFile->getSize(), $size);
@@ -198,7 +198,7 @@ public function testCreateUploadedFileWithError()
 
     private function createUploadedFile(string $content, int $error, string $clientFileName, string $clientMediaType): UploadedFile
     {
-        $filePath = tempnam($this->tmpDir, uniqid());
+        $filePath = tempnam($this->tmpDir, uniqid('', true));
         file_put_contents($filePath, $content);
 
         return new UploadedFile($filePath, filesize($filePath), $error, $clientFileName, $clientMediaType);
diff --git a/Tests/Factory/PsrHttpFactoryTest.php b/Tests/Factory/PsrHttpFactoryTest.php
index 41629e8..0c41221 100644
--- a/Tests/Factory/PsrHttpFactoryTest.php
+++ b/Tests/Factory/PsrHttpFactoryTest.php
@@ -131,7 +131,7 @@ public function testGetContentCanBeCalledAfterRequestCreation()
 
     private function createUploadedFile(string $content, string $originalName, string $mimeType, int $error): UploadedFile
     {
-        $path = tempnam($this->tmpDir, uniqid());
+        $path = tempnam($this->tmpDir, uniqid('', true));
         file_put_contents($path, $content);
 
         return new UploadedFile($path, $originalName, $mimeType, $error, true);
@@ -182,7 +182,7 @@ public function testCreateResponseFromStreamed()
 
     public function testCreateResponseFromBinaryFile()
     {
-        $path = tempnam($this->tmpDir, uniqid());
+        $path = tempnam($this->tmpDir, uniqid('', true));
         file_put_contents($path, 'Binary');
 
         $response = new BinaryFileResponse($path);
@@ -194,7 +194,7 @@ public function testCreateResponseFromBinaryFile()
 
     public function testCreateResponseFromBinaryFileWithRange()
     {
-        $path = tempnam($this->tmpDir, uniqid());
+        $path = tempnam($this->tmpDir, uniqid('', true));
         file_put_contents($path, 'Binary');
 
         $request = new Request();
diff --git a/Tests/Functional/CovertTest.php b/Tests/Functional/CovertTest.php
index b0ea766..c350f29 100644
--- a/Tests/Functional/CovertTest.php
+++ b/Tests/Functional/CovertTest.php
@@ -217,7 +217,7 @@ public static function responseProvider(): array
 
     private static function createUploadedFile(string $content, string $originalName, string $mimeType, int $error): UploadedFile
     {
-        $path = tempnam(sys_get_temp_dir(), uniqid());
+        $path = tempnam(sys_get_temp_dir(), uniqid('', true));
         file_put_contents($path, $content);
 
         return new UploadedFile($path, $originalName, $mimeType, $error, true);