diff --git a/.gitignore b/.gitignore
index 593b203ff..60a67740d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /vendor/
 /composer.lock
 /code-coverage/
+/.phpunit.result.cache
diff --git a/composer.json b/composer.json
index 8ffeb2e67..c456a033c 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "require-dev" : {
-    "phpunit/phpunit" : "5.7.27",
+    "phpunit/phpunit" : "8.5.2",
     "squizlabs/php_codesniffer" : "3.4.0"
   }
 }
diff --git a/lam/tests/lib/2factorWebauthnTest.php b/lam/tests/lib/2factorWebauthnTest.php
index c8b774571..945c4ae89 100644
--- a/lam/tests/lib/2factorWebauthnTest.php
+++ b/lam/tests/lib/2factorWebauthnTest.php
@@ -80,7 +80,7 @@ class WebauthnProviderTest extends TestCase {
 		$row->generateHTML(null, array(), array(), false, $tabindex, 'none');
 		$html = ob_get_contents();
 		ob_end_clean();
-		$this->assertContains('skip_webauthn', $html);
+		$this->assertStringContainsString('skip_webauthn', $html);
 	}
 
 }
\ No newline at end of file
diff --git a/lam/tests/lib/webauthnTest.php b/lam/tests/lib/webauthnTest.php
index f32161617..a2846cb3c 100644
--- a/lam/tests/lib/webauthnTest.php
+++ b/lam/tests/lib/webauthnTest.php
@@ -53,7 +53,6 @@ class WebauthnManagerTest extends TestCase {
 			->getMock();
 		$this->database->method('findOneByCredentialId')->willReturn(null);
 		$this->database->method('findAllForUserEntity')->willReturn(array());
-		$this->database->method('saveCredentialSource')->willReturn(true);
 
 		$this->manager = $this
 			->getMockBuilder(WebauthnManager::class)