diff --git a/nix/base-system/flake.nix b/nix/base-system/flake.nix
index a87a734..425f1ff 100644
--- a/nix/base-system/flake.nix
+++ b/nix/base-system/flake.nix
@@ -24,10 +24,12 @@
     agenix-flake,
     nil-flake,
     nurl-flake,
+    nixpkgs,
     ... # We don't use the self or nixpkgs args here so we just glob it.
   }: {
     systemModule = system: let
       runwhen = runwhen-flake.defaultPackage."${system}";
+      nixPkgs = import nixpkgs { inherit system; };
       durnitisp = durnitisp-flake.defaultPackage."${system}";
       rust-overlay = rust-overlay-flake.overlays.default;
       sile = sile-flake.defaultPackage.${system};
@@ -84,7 +86,7 @@
         environment.variables = {
           EDITOR="nvim";
           PAGER="less -R";
-		  OMNISHARP_BIN = "${pkgs.omnisharp-roslyn}/bin/OmniSharp";
+		  OMNISHARP_BIN = "${nixPkgs.omnisharp-roslyn}/bin/OmniSharp";
         };
 
         environment.etc."nvim.lua" = {
@@ -190,7 +192,7 @@ EOF";
             awscli2
             nil-pkg
             alloy6
-            omnisharp-roslyn
+            nixPkgs.omnisharp-roslyn
             (tlaplus.override {
               adoptopenjdk-bin = jdk;
             })
@@ -205,7 +207,7 @@ EOF";
             mkcert
             octave
             kubo
-            dotnet-sdk_7
+            nixPkgs.dotnet-sdk_7
             netcoredbg
             powershell
             rust-analyzer
diff --git a/nix/darwin/flake.lock b/nix/darwin/flake.lock
index 28a171e..c23ac53 100644
--- a/nix/darwin/flake.lock
+++ b/nix/darwin/flake.lock
@@ -36,12 +36,12 @@
       },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-9HfOJnBrdvyK5KFee23K+PzfQQl03B6c2d1tjI/2Jow=",
-        "path": "/nix/store/vg0kcch2pr0xpwdjyw4z9g7cvd0by4gz-source/nix/base-system",
+        "narHash": "sha256-ZQs3QUQ5pSROCdIjljeekglluVqJTQJPCRhPmagDkUI=",
+        "path": "/nix/store/42325m36f5gg3jzx45prgxdnnhc9gkg5-source/nix/base-system",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/vg0kcch2pr0xpwdjyw4z9g7cvd0by4gz-source/nix/base-system",
+        "path": "/nix/store/42325m36f5gg3jzx45prgxdnnhc9gkg5-source/nix/base-system",
         "type": "path"
       }
     },
@@ -513,16 +513,16 @@
     },
     "nixpkgs_9": {
       "locked": {
-        "lastModified": 1703646585,
-        "narHash": "sha256-+opnZCFE4k+EiTNxnpSOHoKcDFV2C6kgD802ApRhp8c=",
+        "lastModified": 1701282334,
+        "narHash": "sha256-MxCVrXY6v4QmfTwIysjjaX0XUhqBbxTWWB4HXtDYsdk=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9fc0de7eff04a03c9c43f5ff55d97d0e4e8f3141",
+        "rev": "057f9aecfb71c4437d2b27d3323df7f93c010b7e",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "release-23.11",
+        "ref": "23.11",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/nix/darwin/flake.nix b/nix/darwin/flake.nix
index dfd00ae..30dd8bb 100644
--- a/nix/darwin/flake.nix
+++ b/nix/darwin/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/release-23.11";
+    nixpkgs.url = "github:nixos/nixpkgs/23.11";
     darwin.url = "github:lnl7/nix-darwin";
     base-system = {
       url = "../base-system/";