diff --git a/flake.lock b/flake.lock
index 35915f0..b6b068c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -137,11 +137,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1729850857,
-        "narHash": "sha256-WvLXzNNnnw+qpFOmgaM3JUlNEH+T4s22b5i2oyyCpXE=",
+        "lastModified": 1731531548,
+        "narHash": "sha256-sz8/v17enkYmfpgeeuyzniGJU0QQBfmAjlemAUYhfy8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "41dea55321e5a999b17033296ac05fe8a8b5a257",
+        "rev": "24f0d4acd634792badd6470134c387a3b039dace",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 751e964..9859dba 100644
--- a/flake.nix
+++ b/flake.nix
@@ -67,10 +67,9 @@
                 name = "mingw-sword";
                 phases = [ "installPhase" ];
                 installPhase = ''
-                  mkdir -p $out/sword
-                  cp -RL ${win.sword}/* $out/sword
-                  ${pkgs.gnutar}/bin/tar caf $out/sword.tar.xz $out/sword
-                  rm -rf $out/sword
+                  mkdir -p $out
+                  pushd ${win.sword}
+                  ${pkgs.gnutar}/bin/tar cvhaf $out/sword.tar.xz .
                 '';
               };
             };