diff --git a/roles/netbootxyz/defaults/main.yml b/roles/netbootxyz/defaults/main.yml
index 39ed4cda..5f2169a4 100644
--- a/roles/netbootxyz/defaults/main.yml
+++ b/roles/netbootxyz/defaults/main.yml
@@ -412,6 +412,8 @@ releases:
     menu: linux
     name: NixOS
     versions:
+    - code_name: nixos-unstable
+      name: nixos-unstable
     - code_name: nixos-26.05
       name: nixos-26.05
     - code_name: nixos-25.11