diff --git a/mkosi.conf.d/postmarketos.conf b/mkosi.conf.d/postmarketos/mkosi.conf
similarity index 100%
rename from mkosi.conf.d/postmarketos.conf
rename to mkosi.conf.d/postmarketos/mkosi.conf
diff --git a/mkosi.conf.d/postmarketos/mkosi.sandbox/etc/update-grub.conf b/mkosi.conf.d/postmarketos/mkosi.sandbox/etc/update-grub.conf
new file mode 100644
index 000000000..52492866c
--- /dev/null
+++ b/mkosi.conf.d/postmarketos/mkosi.sandbox/etc/update-grub.conf
@@ -0,0 +1 @@
+disable_trigger=1