1 files changed, 1 insertions, 1 deletions
diff --git a/tests/Unit/Notification/NotifierTest.php b/tests/Unit/Notification/NotifierTest.php
index 84786d1..88d063b 100644
--- a/tests/Unit/Notification/NotifierTest.php
+++ b/tests/Unit/Notification/NotifierTest.php
@@ -55,7 +55,7 @@ class NotifierTest extends TestCase
     /** @var Notifier|\PHPUnit_Framework_MockObject_MockObject */
     protected $notifier;
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();