diff --git a/flake.nix b/flake.nix
index bae259b..30c5c78 100644
--- a/flake.nix
+++ b/flake.nix
@@ -67,6 +67,7 @@
       nixosConfigurations = {
         altair = mkNixosConfig {
           path = ./system/hosts/altair;
+          nixpkgs = inputs.nixpkgs-unstable; # Required for Tailwind until 25.05 is cut
         };
         vega = mkNixosConfig {
           path = ./system/hosts/vega;