diff --git a/tests/Unit/SignInvoiceTest.php b/tests/Unit/SignInvoiceTest.php
index fb18740..214f43d 100644
--- a/tests/Unit/SignInvoiceTest.php
+++ b/tests/Unit/SignInvoiceTest.php
@@ -9,23 +9,22 @@
 
 class SignInvoiceTest extends \PHPUnit\Framework\TestCase
 {
-    protected const CERTIFICATE  = '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';
+    protected const CERTIFICATE  = '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';
     protected const PRIVATE_KEY   = 'MHQCAQEEIP0tXvA0mhzTBgjZaAGt+V3tWIr79nG/gs56jKFJb6gboAcGBSuBBAAKoUQDQgAE+39UxFUCaF5p51RTvwXL+YODEpITlTdI27S72pSPJEAjQs2jBb1sLS/xg8/y5555+d19KoLmLo6gMrxvINXaHw==';
-    protected const SERIAL_NUMBER = '2475382888117010136950089026926167642744062132';
+    protected const SERIAL_NUMBER = '379112742831380471835263969587287663520528387';
 
     /** @test */
     public function isValidCertificate()
     {
         $x509 = new X509();
         $x509->loadX509(self::CERTIFICATE);
-
         $this->assertIsArray($x509->getCurrentCert());
 
         $this->assertEquals($x509->getCurrentCert()['tbsCertificate']['serialNumber']->toString(), self::SERIAL_NUMBER);
 
         $this->assertEquals($x509->getCurrentCert()['signatureAlgorithm']['algorithm'], 'ecdsa-with-SHA256');
 
-        $this->assertEquals($x509->getIssuerDNProp('CN')[0], 'TSZEINVOICE-SubCA-1');
+        $this->assertEquals($x509->getIssuerDNProp('CN')[0], 'PRZEINVOICESCA4-CA');
 
         $this->assertTrue($x509->validateDate());