diff --git a/hosts/hydra/default.nix b/hosts/hydra/default.nix
index 19a720ac..4b4d5c7f 100644
--- a/hosts/hydra/default.nix
+++ b/hosts/hydra/default.nix
@@ -55,21 +55,6 @@
     };
     nameservers = [ "172.20.73.8" "9.9.9.9" ];
   };
-  nixpkgs.config.packageOverrides = pkgs: {
-    # HACK: nix-2.5.1 is broken <https://github.com/NixOS/nix/issues/5728>
-    nixUnstable = pkgs.nixUnstable.overrideAttrs (oa: rec {
-      version = "2.6${VERSION_SUFFIX}";
-      VERSION_SUFFIX = "pre20220107_${pkgs.lib.substring 0 7 src.rev}";
-      patches = [];
-      src = pkgs.fetchFromGitHub {
-        owner = "nixos";
-        repo = "nix";
-        rev = "fcddaa4b9b22a910a24a513bc05579a12eb1db41";
-        sha256 = "1v5z2kc9gard6sqxqi73w37x1jfa9ja04svkwr9f1dfj3vl3xygp";
-      };
-    });
-  };
-
 
   # This value determines the NixOS release with which your system is to be
   # compatible, in order to avoid breaking some software such as database