diff --git a/package.json b/package.json
index e25ad5b..8362d14 100644
--- a/package.json
+++ b/package.json
@@ -38,8 +38,7 @@
     "test:browser": "karma start .karma.cjs --single-run",
     "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:cjs": "tsc -p tsconfig.cjs.json && ./rename.sh",
     "build": "run-s clean build:*",
     "clean": "rm -rf ./dist",
     "dev": "run-p -ln dev:*",