1 files changed, 1 insertions, 1 deletions
diff --git a/tests/Unit/Db/MapperTestUtility.php b/tests/Unit/Db/MapperTestUtility.php
index fc4bff6..9470c38 100644
--- a/tests/Unit/Db/MapperTestUtility.php
+++ b/tests/Unit/Db/MapperTestUtility.php
@@ -41,7 +41,7 @@ abstract class MapperTestUtility extends TestCase
      * Run this function before the actual test to either set or initialize the
      * db. After this the db can be accessed by using $this->db.
      */
-    protected function setUp()
+    protected function setUp(): void
     {
         parent::setUp();