diff --git a/.gitignore b/.gitignore
index 35c3873..51513b9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,6 @@ core
 .direnv
 result
 sparse-public
+
+rust9x.7z
+rust9x
diff --git a/flake.nix b/flake.nix
index ed0940b..29fe515 100644
--- a/flake.nix
+++ b/flake.nix
@@ -153,7 +153,7 @@
         devShells.default = craneLib.devShell {
           name = "sparse";
 
-          buildInputs = windowsBuildTools ++ [ rust-analyzer ];
+          buildInputs = windowsBuildTools ++ [ rust-analyzer rustup ];
 
           SPARSE_BUILD_WINPCAP = "${winpcap}/Lib";
           SPARSE_BUILD_LIBPCAP = "${libpcap-src}";