1 files changed, 1 insertions, 1 deletions

diff --git a/tests/config/ConfigJsonTest.php b/tests/config/ConfigJsonTest.php
index 33160eb0..f1612e9b 100644
--- a/tests/config/ConfigJsonTest.php
+++ b/tests/config/ConfigJsonTest.php
@@ -11,7 +11,7 @@ class ConfigJsonTest extends \PHPUnit\Framework\TestCase
      */
     protected $configIO;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->configIO = new ConfigJson();
     }