diff --git a/tsup.config.ts b/tsup.config.ts
index 0df056e..624db89 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -13,7 +13,7 @@ export default defineConfig([
     },
     clean: true,
     platform: "browser",
-    noExternal: [],
+    noExternal: ["brotli", "buffer", "events"],
     treeshake: "smallest",
     external: ["undici"],
   },
@@ -26,7 +26,7 @@ export default defineConfig([
     outDir: "dist/min",
     dts: false,
     sourcemap: true,
-    noExternal: [],
+    noExternal: ["brotli", "buffer", "events"],
     treeshake: "smallest",
     minify: "terser",
     platform: "browser",