diff --git a/paludis/keywords.conf.d/system.conf b/paludis/keywords.conf.d/system.conf
index a6f5b21..a454d36 100644
--- a/paludis/keywords.conf.d/system.conf
+++ b/paludis/keywords.conf.d/system.conf
@@ -1,4 +1,9 @@
 sys-apps/paludis ~amd64
+
+# nix
+sys-apps/nix ~amd64
+sys-devel/bison ~amd64
+
 sys-kernel/vanilla-sources ~amd64
 app-portage/gentoolkit ~amd64