diff --git a/scripts/expand-windows-installer.mjs b/scripts/expand-windows-installer.mjs
index 124de26..120e37c 100644
--- a/scripts/expand-windows-installer.mjs
+++ b/scripts/expand-windows-installer.mjs
@@ -10,50 +10,56 @@ import { spawnSync } from "node:child_process";
 import { fileURLToPath } from "node:url";
 
 const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const electrobunDir = path.join(rootDir, "node_modules/electrobun");
 
 function findZstdDecompressCommand() {
-  const systemZstd = spawnSync("zstd", ["--version"], { encoding: "utf8" });
+  const spawnOpts = process.platform === "win32" ? { shell: true } : {};
+
+  const systemZstd = spawnSync("zstd", ["--version"], {
+    encoding: "utf8",
+    ...spawnOpts,
+  });
   if (systemZstd.status === 0) {
-    return { command: "zstd", args: (inputPath, outputPath) => [
-      "-d",
-      "-f",
-      "-o",
-      outputPath,
-      inputPath,
-    ] };
+    return {
+      command: "zstd",
+      args: (inputPath, outputPath) => [
+        "-d",
+        "-f",
+        "-o",
+        outputPath,
+        inputPath,
+      ],
+    };
   }
 
   const hostArch = process.arch === "arm64" ? "arm64" : "x64";
   const candidates = [
-    path.join(
-      rootDir,
-      "node_modules/electrobun/dist-win-x64/zig-zstd",
-      hostArch,
-      "zig-zstd.exe",
-    ),
-    path.join(
-      rootDir,
-      "node_modules/electrobun/dist-win-x64/zig-zstd",
-      "x64",
-      "zig-zstd.exe",
-    ),
-    path.join(rootDir, "node_modules/electrobun/dist-win-x64", "zig-zstd"),
+    path.join(electrobunDir, `dist-win-${hostArch}`, "zig-zstd.exe"),
+    path.join(electrobunDir, "dist-win-x64", "zig-zstd.exe"),
+    path.join(electrobunDir, `dist-macos-${hostArch}`, "zig-zstd"),
+    path.join(electrobunDir, "dist-macos-x64", "zig-zstd"),
+    path.join(electrobunDir, "dist-win-x64", "zig-zstd", "x64", "zig-zstd.exe"),
+    path.join(electrobunDir, "dist-win-x64", "zig-zstd", "arm64", "zig-zstd.exe"),
+    path.join(electrobunDir, "vendors", "zig-zstd", "x64", "zig-zstd.exe"),
+    path.join(electrobunDir, "vendors", "zig-zstd", "arm64", "zig-zstd.exe"),
   ];
 
   for (const candidate of candidates) {
-    if (existsSync(candidate)) {
-      return {
-        command: candidate,
-        args: (inputPath, outputPath) => [
-          "decompress",
-          "-i",
-          inputPath,
-          "-o",
-          outputPath,
-          "--no-timing",
-        ],
-      };
+    if (!existsSync(candidate)) {
+      continue;
     }
+
+    return {
+      command: candidate,
+      args: (inputPath, outputPath) => [
+        "decompress",
+        "-i",
+        inputPath,
+        "-o",
+        outputPath,
+        "--no-timing",
+      ],
+    };
   }
 
   return null;
@@ -69,6 +75,7 @@ function decompressTarZst(inputPath, outputPath) {
 
   const result = spawnSync(zstd.command, zstd.args(inputPath, outputPath), {
     stdio: "inherit",
+    shell: process.platform === "win32",
   });
 
   if (result.status !== 0) {
@@ -94,6 +101,7 @@ export function expandWindowsAppFromArchive(setupArchivePath, parentDir) {
 
   const extractTar = spawnSync("tar", ["-xf", tarPath, "-C", workDir], {
     stdio: "inherit",
+    shell: process.platform === "win32",
   });
 
   if (extractTar.status !== 0) {