diff --git a/flake.nix b/flake.nix
index 836acc1..a19980c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,9 @@
   description = "stolen from neutralinsomniac's nix config";
 
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-25.05";
+    ### Build's broken.
+    # nixpkgs.url = "nixpkgs/nixos-25.05";
+    nixpkgs.url = "nixpkgs/b1b3291469652d5a2edb0becc4ef0246fff97a7c";
     nixpkgs-unstable.url = "nixpkgs/nixos-unstable";
 
     nix-index-database.url = "github:nix-community/nix-index-database";