1 files changed, 1 insertions, 1 deletions

diff --git a/tests/TimeZoneTest.php b/tests/TimeZoneTest.php
index 02bf060f..d3d9aeeb 100644
--- a/tests/TimeZoneTest.php
+++ b/tests/TimeZoneTest.php
@@ -15,7 +15,7 @@ class TimeZoneTest extends PHPUnit\Framework\TestCase
      */
     protected $installedTimezones;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->installedTimezones = [
             'Antarctica/Syowa',