diff --git a/Dockerfile b/Dockerfile
index 7509967acb00c34f18625d572cdd392e7666e59b..951fe7637eff995aeed17d7f4bd7630f29fa51bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ COPY --from=portage /var/db/repos/gentoo /var/db/repos/gentoo
 
 ENV ACCEPT_KEYWORDS="~amd64" \
     EMERGE_DEFAULT_OPTS="--jobs=4 --quiet" \
-    FEATURES="-ipc-sandbox -network-sandbox -pid-sandbox" \
+    FEATURES="-sandbox -usersandbox -ipc-sandbox -network-sandbox -mount-sandbox -pid-sandbox" \
     MAKEOPTS="-j4" \
     USE="-perl -ipc -rsync-verify"