diff --git a/package.json b/package.json
index 346f313..b612d25 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     ".": {
       "types": "./dist/esm/index.d.ts",
       "import": "./dist/esm/index.js",
-      "require": "./dist/cjs/index.js"
+      "require": "./dist/cjs/index.cjs"
     }
   },
   "files": [
@@ -39,6 +39,7 @@
     "test": "run-s build test:*",
     "build:esm": "tsc -p tsconfig.esm.json",
     "build:cjs": "tsc -p tsconfig.cjs.json && rename -S .js .cjs dist/cjs/**/*",
+    "build:rename": "./rename.sh",
     "build": "run-s clean build:*",
     "clean": "rm -rf ./dist",
     "dev": "run-p -ln dev:*",
diff --git a/rename.sh b/rename.sh
new file mode 100755
index 0000000..9a7b5c2
--- /dev/null
+++ b/rename.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+# Rename .js files to .cjs
+rename -S .js .cjs dist/cjs/**
+sed -i '' 's/\.js"/\.cjs"/g' dist/cjs/index.cjs