diff --git a/tests/test-controller.php b/tests/test-controller.php
index 1dd69bdd..297622fd 100644
--- a/tests/test-controller.php
+++ b/tests/test-controller.php
@@ -16,7 +16,7 @@ public static function get_instance() {
 		return view_admin_as()->controller();
 	}
 
-	protected function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 		add_action( 'vaa_view_admin_as_update_view', array( 'VAA_Controller_UnitTest', 'action_callback' ) );
 		add_action( 'vaa_view_admin_as_reset_view', array( 'VAA_Controller_UnitTest', 'action_callback' ) );
diff --git a/tests/unittestcase.php b/tests/unittestcase.php
index bc6b9c41..5d4aa45a 100644
--- a/tests/unittestcase.php
+++ b/tests/unittestcase.php
@@ -8,7 +8,7 @@
 
 class VAA_UnitTestCase extends WP_UnitTestCase
 {
-	protected function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 		wp_set_current_user( 1 );
 		VAA_UnitTest_Factory::vaa_reinit();