diff --git a/packages/create-rslib/template-node-dual-js/rslib.config.mjs b/packages/create-rslib/template-node-dual-js/rslib.config.js
similarity index 100%
rename from packages/create-rslib/template-node-dual-js/rslib.config.mjs
rename to packages/create-rslib/template-node-dual-js/rslib.config.js
diff --git a/packages/create-rslib/template-node-esm-js/rslib.config.mjs b/packages/create-rslib/template-node-esm-js/rslib.config.js
similarity index 100%
rename from packages/create-rslib/template-node-esm-js/rslib.config.mjs
rename to packages/create-rslib/template-node-esm-js/rslib.config.js
diff --git a/packages/create-rslib/template-react-compiler/react-js/rslib.config.mjs b/packages/create-rslib/template-react-compiler/react-js/rslib.config.js
similarity index 100%
rename from packages/create-rslib/template-react-compiler/react-js/rslib.config.mjs
rename to packages/create-rslib/template-react-compiler/react-js/rslib.config.js
diff --git a/packages/create-rslib/template-react-js/rslib.config.mjs b/packages/create-rslib/template-react-js/rslib.config.js
similarity index 100%
rename from packages/create-rslib/template-react-js/rslib.config.mjs
rename to packages/create-rslib/template-react-js/rslib.config.js
diff --git a/packages/create-rslib/test/helper.ts b/packages/create-rslib/test/helper.ts
index 72bb8bc5b..7379a1488 100644
--- a/packages/create-rslib/test/helper.ts
+++ b/packages/create-rslib/test/helper.ts
@@ -112,7 +112,7 @@ export const createAndValidate = (
   if (templateCase.template === 'react') {
     const configFile = path.join(
       dir,
-      templateCase.lang === 'ts' ? 'rslib.config.ts' : 'rslib.config.mjs',
+      templateCase.lang === 'ts' ? 'rslib.config.ts' : 'rslib.config.js',
     );
     const configContent = fse.readFileSync(configFile, 'utf-8');