diff --git a/sys/meta/build-base/ympbuild b/sys/meta/build-base/ympbuild
index bb6b0788..bd070fd6 100644
--- a/sys/meta/build-base/ympbuild
+++ b/sys/meta/build-base/ympbuild
@@ -14,4 +14,4 @@ group=(sys.meta)
 depends=(gcc make bison flex binutils file tar clang llvm git
          python autoconf automake findutils fakeroot gettext m4
          patch coreutils meson cmake linux-headers gtk-doc
-         pkgconf bc diffutils libtool mklinux)
+         pkgconf bc diffutils libtool mklinux ninja)