diff --git a/src/server/util/carts.ts b/src/server/util/carts.ts
index 44151eb..335856d 100644
--- a/src/server/util/carts.ts
+++ b/src/server/util/carts.ts
@@ -9,6 +9,7 @@ const outputDirPath = path.resolve(__dirname, "..", "..", "..", "output");
 const getRom = async (inputFile: string) => {
 	const uuid = randomUUID();
 	const dir = path.join(outputDirPath, uuid);
+	fs.mkdirSync(dir, {recursive: true});
 	const outputFile = path.join(dir, "output.js");
 
 	await shrinko8({