diff --git a/mkosi.extra/usr/lib/tmpfiles.d/testuser.conf b/mkosi.extra/usr/lib/tmpfiles.d/testuser.conf
new file mode 100644
index 00000000000..7113177f4de
--- /dev/null
+++ b/mkosi.extra/usr/lib/tmpfiles.d/testuser.conf
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+z! /home/testuser 700 testuser testuser