diff --git a/profiles/pentoo/base/package.mask b/profiles/pentoo/base/package.mask
index b0473d47b..7129b13ab 100644
--- a/profiles/pentoo/base/package.mask
+++ b/profiles/pentoo/base/package.mask
@@ -153,3 +153,7 @@ dev-python/brotlipy
 dev-lang/lua:0
 =net-dns/dnsmasq-2.83-r1
 =net-dns/dnsmasq-2.84
+
+#https://bugs.gentoo.org/688310#c7
+#stay on old for "bundle install --local" ZC hack
+>dev-ruby/rubygems-3.0.3