diff --git a/package.json b/package.json
index 06b35fc..8c7d036 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "lint": "tsc && eslint lib/**/*.ts",
     "format": "eslint lib/**/*.ts --fix",
     "clean": "rm -rf dist-ts dist",
-    "build": "npm run clean && tsc -p tsconfig-build.json && rollup -c && node -r esbuild-register bundle-types",
+    "build": "npm run clean && tsc -p tsconfig-build.json && rollup -c --bundleConfigAsCjs && node -r esbuild-register bundle-types",
     "prepublishOnly": "npm run build",
     "semantic-release": "semantic-release"
   },