diff --git a/flake.nix b/flake.nix
index 4b02ce2..912f255 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,7 @@
       dotnet-sdk = pkgs.dotnet-sdk_8;
       dotnet-runtime = pkgs.dotnetCorePackages.runtime_8_0;
       version = "0.1";
-      dotnetTool = toolName: toolVersion: sha256:
+      dotnetTool = toolName: toolVersion: hash:
         pkgs.stdenvNoCC.mkDerivation rec {
           name = toolName;
           version = toolVersion;
@@ -28,7 +28,7 @@
           src = pkgs.fetchNuGet {
             pname = name;
             version = version;
-            sha256 = sha256;
+            hash = hash;
             installPhase = ''mkdir -p $out/bin && cp -r tools/net6.0/any/* $out/bin'';
           };
           installPhase = ''
@@ -39,7 +39,7 @@
             runHook postInstall
           '';
         };
-      fantomas = dotnetTool "fantomas" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fantomas.version (builtins.head (builtins.filter (elem: elem.pname == "fantomas") ((import ./nix/deps.nix) {fetchNuGet = x: x;}))).sha256;
+      fantomas = dotnetTool "fantomas" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fantomas.version (builtins.head (builtins.filter (elem: elem.pname == "fantomas") ((import ./nix/deps.nix) {fetchNuGet = x: x;}))).hash;
     in {
       packages = {
         fantomas = fantomas;