1 files changed, 3 insertions, 3 deletions

diff --git a/tests/UtilsTest.php b/tests/UtilsTest.php
index 26d2a6b8..93b77539 100644
--- a/tests/UtilsTest.php
+++ b/tests/UtilsTest.php
@@ -26,7 +26,7 @@ class UtilsTest extends PHPUnit\Framework\TestCase
     /**
      * Assign reference data
      */
-    public static function setUpBeforeClass()
+    public static function setUpBeforeClass(): void
     {
         self::$defaultTimeZone = date_default_timezone_get();
         // Timezone without DST for test consistency
@@ -36,7 +36,7 @@ class UtilsTest extends PHPUnit\Framework\TestCase
     /**
      * Reset the timezone
      */
-    public static function tearDownAfterClass()
+    public static function tearDownAfterClass(): void
     {
         date_default_timezone_set(self::$defaultTimeZone);
     }
@@ -44,7 +44,7 @@ class UtilsTest extends PHPUnit\Framework\TestCase
     /**
      * Resets test data before each test
      */
-    protected function setUp()
+    protected function setUp(): void
     {
         if (file_exists(self::$testLogFile)) {
             unlink(self::$testLogFile);