diff --git a/flake.lock b/flake.lock
index ec7ff71..3e38940 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1743583204,
-        "narHash": "sha256-F7n4+KOIfWrwoQjXrL2wD9RhFYLs2/GGe/MQY1sSdlE=",
+        "lastModified": 1772963539,
+        "narHash": "sha256-9jVDGZnvCckTGdYT53d/EfznygLskyLQXYwJLKMPsZs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2c8d3f48d33929642c1c12cd243df4cc7d2ce434",
+        "rev": "9dcb002ca1690658be4a04645215baea8b95f31d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 4826238..803fb4b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -51,6 +51,8 @@
         };
       };
 
+      formatter = forAllSystems ({ pkgs, ... }: pkgs.nixfmt-tree);
+
       packages = forAllSystems (
         { pkgs }:
         {
diff --git a/pkgs/path-of-building-poe2/default.nix b/pkgs/path-of-building-poe2/default.nix
index 516c76a..cb25f30 100644
--- a/pkgs/path-of-building-poe2/default.nix
+++ b/pkgs/path-of-building-poe2/default.nix
@@ -64,7 +64,8 @@ stdenv.mkDerivation {
     qttools
     wrapQtAppsHook
     icoutils
-  ] ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
+  ]
+  ++ lib.optional stdenv.hostPlatform.isLinux copyDesktopItems;
 
   buildInputs = [
     qtbase
diff --git a/pkgs/vintagestory/default.nix b/pkgs/vintagestory/default.nix
index 53084b4..7df3f24 100644
--- a/pkgs/vintagestory/default.nix
+++ b/pkgs/vintagestory/default.nix
@@ -75,24 +75,23 @@ stdenv.mkDerivation rec {
     runHook postInstall
   '';
 
-  preFixup =
-    ''
-      sed -i 's/net7.0/net8.0/' $out/share/vintagestory/Vintagestory.runtimeconfig.json
-      sed -i 's/7.0.0/8.0.11/' $out/share/vintagestory/Vintagestory.runtimeconfig.json
+  preFixup = ''
+    sed -i 's/net7.0/net8.0/' $out/share/vintagestory/Vintagestory.runtimeconfig.json
+    sed -i 's/7.0.0/8.0.11/' $out/share/vintagestory/Vintagestory.runtimeconfig.json
 
-      makeWrapper ${dotnet-runtime_8}/bin/dotnet $out/bin/vintagestory \
-        --prefix LD_LIBRARY_PATH : "${runtimeLibs}" \
-        --add-flags $out/share/vintagestory/Vintagestory.dll
-      makeWrapper ${dotnet-runtime_8}/bin/dotnet $out/bin/vintagestory-server \
-        --prefix LD_LIBRARY_PATH : "${runtimeLibs}" \
-        --add-flags $out/share/vintagestory/VintagestoryServer.dll
-    ''
-    + ''
-      find "$out/share/vintagestory/assets/" -not -path "*/fonts/*" -regex ".*/.*[A-Z].*" | while read -r file; do
-        local filename="$(basename -- "$file")"
-        ln -sf "$filename" "''${file%/*}"/"''${filename,,}"
-      done
-    '';
+    makeWrapper ${dotnet-runtime_8}/bin/dotnet $out/bin/vintagestory \
+      --prefix LD_LIBRARY_PATH : "${runtimeLibs}" \
+      --add-flags $out/share/vintagestory/Vintagestory.dll
+    makeWrapper ${dotnet-runtime_8}/bin/dotnet $out/bin/vintagestory-server \
+      --prefix LD_LIBRARY_PATH : "${runtimeLibs}" \
+      --add-flags $out/share/vintagestory/VintagestoryServer.dll
+  ''
+  + ''
+    find "$out/share/vintagestory/assets/" -not -path "*/fonts/*" -regex ".*/.*[A-Z].*" | while read -r file; do
+      local filename="$(basename -- "$file")"
+      ln -sf "$filename" "''${file%/*}"/"''${filename,,}"
+    done
+  '';
 
   meta = with lib; {
     description = "In-development indie sandbox game about innovation and exploration";