diff --git a/makechrootpkg.in b/makechrootpkg.in
index 4c301e6..f69c781 100644
--- a/makechrootpkg.in
+++ b/makechrootpkg.in
@@ -161,7 +161,7 @@ install_packages() {
 
 	cp -- "${install_pkgs[@]}" "$copydir/root/"
 	arch-nspawn "$copydir" "${bindmounts_ro[@]}" "${bindmounts_rw[@]}" \
-		pacman -U --noconfirm -- "${pkgnames[@]/#//root/}"
+		bash -c 'yes y | pacman -U -- "$@"' -bash "${pkgnames[@]/#//root/}"
 	ret=$?
 	rm -- "${pkgnames[@]/#/$copydir/root/}"