diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index b3b2e3857b..6d89bac722 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -6,6 +6,7 @@ slow_qtests = {
   'test-hmp' : 240,
   'pxe-test': 600,
   'prom-env-test': 360,
+  'boot-serial-test': 180,
 }
 
 qtests_generic = [