diff --git a/flake.lock b/flake.lock
index c761e5af88c..99b9f4f751c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -77,22 +77,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-23-11": {
-      "locked": {
-        "lastModified": 1717159533,
-        "narHash": "sha256-oamiKNfr2MS6yH64rUn99mIZjc45nGJlj9eGth/3Xuw=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "a62e6edd6d5e1fa0329b8653c801147986f8d446",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "a62e6edd6d5e1fa0329b8653c801147986f8d446",
-        "type": "github"
-      }
-    },
     "nixpkgs-regression": {
       "locked": {
         "lastModified": 1643052045,
@@ -114,9 +98,7 @@
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
         "git-hooks-nix": "git-hooks-nix",
-        "libgit2": "libgit2",
         "nixpkgs": "nixpkgs",
-        "nixpkgs-23-11": "nixpkgs-23-11",
         "nixpkgs-regression": "nixpkgs-regression"
       }
     }
diff --git a/flake.nix b/flake.nix
index 554b3a197ce..9bd33d3ae5b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,6 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small";
 
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
-  inputs.nixpkgs-23-11.url = "github:NixOS/nixpkgs/a62e6edd6d5e1fa0329b8653c801147986f8d446";
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
 
   # dev tooling
diff --git a/tests/nixos/default.nix b/tests/nixos/default.nix
index 17bfdea3822..3a0822856d9 100644
--- a/tests/nixos/default.nix
+++ b/tests/nixos/default.nix
@@ -56,18 +56,9 @@ let
     nix.package = lib.mkForce pkgs.nixVersions.nix_2_3;
   };
 
-  otherNixes.nix_2_13.setNixPackage = { lib, pkgs, ... }: {
+  otherNixes.nix_2_24.setNixPackage = { lib, pkgs, ... }: {
     imports = [ checkOverrideNixVersion ];
-    nix.package = lib.mkForce (
-      self.inputs.nixpkgs-23-11.legacyPackages.${pkgs.stdenv.hostPlatform.system}.nixVersions.nix_2_13.overrideAttrs (o: {
-        meta = o.meta // { knownVulnerabilities = []; };
-      })
-    );
-  };
-
-  otherNixes.nix_2_18.setNixPackage = { lib, pkgs, ... }: {
-    imports = [ checkOverrideNixVersion ];
-    nix.package = lib.mkForce pkgs.nixVersions.nix_2_18;
+    nix.package = lib.mkForce pkgs.nixVersions.nix_2_24;
   };
 
 in