diff --git a/scripts/build-esm.js b/scripts/build-esm.js
index 73dc4d8b..da593509 100644
--- a/scripts/build-esm.js
+++ b/scripts/build-esm.js
@@ -8,6 +8,5 @@ require('esbuild').build({
   define: {
     global: 'window',
   },
-  external: ['@constructor-io/constructorio-id', 'crc-32'],
   outfile: './lib/esm/constructorio.js',
 }).catch(() => process.exit(1));