diff --git a/gentoo-base.Dockerfile b/gentoo-base.Dockerfile
index f262ea9..a9cba45 100644
--- a/gentoo-base.Dockerfile
+++ b/gentoo-base.Dockerfile
@@ -14,7 +14,7 @@ RUN echo 'USE="minimal -cracklib -gpg -ncurses -nls -pam -pcre -pcre-jit -perl \
     -readline -rsync-verify -xattr"' >> /etc/portage/make.conf
 RUN eselect profile set default/linux/amd64/17.1
 RUN quickpkg --include-config=y @world sys-libs/glibc
-RUN emerge --root=/workdir --usepkg --quiet sys-apps/portage
+RUN emerge --root=/workdir --buildpkg=y --usepkg --quiet sys-apps/portage
 RUN cp /etc/portage/make.conf /workdir/etc/portage/make.conf
 RUN rm -r /workdir/usr/share/{doc,i18n,locale,man,zoneinfo}