diff --git a/apps/server/tsdown.config.ts b/apps/server/tsdown.config.ts
index ebc765577236aeaa44eb9bddaf6882860ae364e3..b0782cae0088ad7092fb55f9493580b3d274c6ce 100644
--- a/apps/server/tsdown.config.ts
+++ b/apps/server/tsdown.config.ts
@@ -3,6 +3,9 @@ import { defineConfig } from "tsdown";
 export default defineConfig({
   entry: ["src/index.ts"],
   format: ["esm", "cjs"],
+  checks: {
+    legacyCjs: false,
+  },
   outDir: "dist",
   sourcemap: true,
   clean: true,