diff --git a/flake.lock b/flake.lock
index db1a72c14..ae98d789a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -34,16 +34,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1701355166,
-        "narHash": "sha256-4V7XMI0Gd+y0zsi++cEHd99u3GNL0xSTGRmiWKzGnUQ=",
+        "lastModified": 1704018918,
+        "narHash": "sha256-erjg/HrpC9liEfm7oLqb8GXCqsxaFwIIPqCsknW5aFY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "36c4ac09e9bebcec1fa7b7539cddb0c9e837409c",
+        "rev": "2c9c58e98243930f8cb70387934daa4bc8b00373",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "staging-23.05",
+        "ref": "nixos-23.05-small",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 9217de9af..e6a88af9f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,17 +1,7 @@
 {
   description = "The purely functional package manager";
 
-  # TODO Go back to nixos-23.05-small once
-  # https://github.com/NixOS/nixpkgs/pull/271202 is merged.
-  #
-  # Also, do not grab arbitrary further staging commits. This PR was
-  # carefully made to be based on release-23.05 and just contain
-  # rebuild-causing changes to packages that Nix actually uses.
-  #
-  # Once this is updated to something containing
-  # https://github.com/NixOS/nixpkgs/pull/271423, don't forget
-  # to remove the `nix.checkAllErrors = false;` line in the tests.
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/staging-23.05";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05-small";
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
   inputs.libgit2 = { url = "github:libgit2/libgit2"; flake = false; };
diff --git a/tests/nixos/default.nix b/tests/nixos/default.nix
index 2645cac8e..4459aa664 100644
--- a/tests/nixos/default.nix
+++ b/tests/nixos/default.nix
@@ -10,7 +10,6 @@ let
     hostPkgs = nixpkgsFor.${system}.native;
     defaults = {
       nixpkgs.pkgs = nixpkgsFor.${system}.native;
-      nix.checkAllErrors = false;
     };
     _module.args.nixpkgs = nixpkgs;
   };