diff --git a/src/cli/build.ts b/src/cli/build.ts
index 1240250..346eccf 100644
--- a/src/cli/build.ts
+++ b/src/cli/build.ts
@@ -16,7 +16,7 @@ export default class Build extends Command {
     config: flags.string({
       char: 'c',
       description: 'The path to a themekit config file.',
-      default: 'themekit.config.json',
+      default: 'themekit.config.{js,json,yml}',
     }),
     watch: flags.boolean({
       char: 'w',
diff --git a/src/core/config.ts b/src/core/config.ts
index 0454444..7cce524 100644
--- a/src/core/config.ts
+++ b/src/core/config.ts
@@ -1,4 +1,5 @@
 import { Platform } from 'style-dictionary'
+import fg from 'fast-glob'
 
 export type Config = {
   entry: Record<string, string>
@@ -6,5 +7,9 @@ export type Config = {
 }
 
 export async function loadConfig(path: string): Promise<Config> {
-  return require(path)
+  const resolvedPath = fg.sync(path)
+  if (resolvedPath.length === 0) {
+    throw new Error(`Cannot load config from "${path}", please check path or file are exists.`)
+  }
+  return require(resolvedPath[0])
 }