diff --git a/third_party/default.nix b/third_party/default.nix
index b81c6a102..9b62ede4d 100644
--- a/third_party/default.nix
+++ b/third_party/default.nix
@@ -173,5 +173,5 @@ in exposed.lib.fix(self: exposed // {
   stdenv = nixpkgs.llvmPackages_10.stdenv;
 
   # Make NixOS available
-  nixos = import "${stableNixpkgsSrc}/nixos";
+  nixos = import "${nixpkgsSrc}/nixos";
 })