diff --git a/lib/install.js b/lib/install.js
index 29d0bbe..6730f2a 100644
--- a/lib/install.js
+++ b/lib/install.js
@@ -59,7 +59,11 @@ async function downloadPrebuilt() {
 	const tempPath = path.join(VENDOR_DIR, `_dl.${process.pid}.tgz`);
 	try {
 		await pipeline(Readable.fromWeb(response.body), fs.createWriteStream(tempPath));
-		const tar = spawnSync('tar', ['-xzf', tempPath, '-C', VENDOR_DIR], {stdio: 'inherit'});
+		// Pass tar a *relative* filename via cwd, not an absolute path.
+		// Windows' bsdtar treats `C:\...` as a `host:path` remote spec
+		// ("Cannot connect to C: resolve failed"); using a basename with
+		// cwd avoids that ambiguity and works identically on POSIX.
+		const tar = spawnSync('tar', ['-xzf', path.basename(tempPath)], {cwd: VENDOR_DIR, stdio: 'inherit'});
 		if (tar.status !== 0) {
 			throw new Error(`tar extraction exited with status ${tar.status}`);
 		}
diff --git a/package.json b/package.json
index b63defc..6fd3d43 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "optipng-bin",
-	"version": "9.2.0",
+	"version": "9.2.1",
 	"description": "OptiPNG wrapper that makes it seamlessly available as a local dependency",
 	"license": "MIT",
 	"repository": "PruvoNet/optipng-bin",