diff --git a/packages/i18n/package.json b/packages/i18n/package.json
index 25251aaec..1c4e2ec9b 100644
--- a/packages/i18n/package.json
+++ b/packages/i18n/package.json
@@ -16,43 +16,43 @@
   },
   "exports": {
     ".": {
-      "types": "./dist/index.d.mts",
-      "default": "./dist/index.mjs"
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
     },
     "./locales": {
-      "types": "./dist/locales/index.d.mts",
-      "default": "./dist/locales/index.mjs"
+      "types": "./dist/locales/index.d.ts",
+      "default": "./dist/locales/index.js"
     },
     "./locales/en": {
-      "types": "./dist/locales/en/index.d.mts",
-      "default": "./dist/locales/en/index.mjs"
+      "types": "./dist/locales/en/index.d.ts",
+      "default": "./dist/locales/en/index.js"
     },
     "./locales/zh-Hans": {
-      "types": "./dist/locales/zh-Hans/index.d.mts",
-      "default": "./dist/locales/zh-Hans/index.mjs"
+      "types": "./dist/locales/zh-Hans/index.d.ts",
+      "default": "./dist/locales/zh-Hans/index.js"
     },
     "./locales/es": {
-      "types": "./dist/locales/es/index.d.mts",
-      "default": "./dist/locales/es/index.mjs"
+      "types": "./dist/locales/es/index.d.ts",
+      "default": "./dist/locales/es/index.js"
     },
     "./locales/ru": {
-      "types": "./dist/locales/ru/index.d.mts",
-      "default": "./dist/locales/ru/index.mjs"
+      "types": "./dist/locales/ru/index.d.ts",
+      "default": "./dist/locales/ru/index.js"
     },
     "./locales/fr": {
-      "types": "./dist/locales/fr/index.d.mts",
-      "default": "./dist/locales/fr/index.mjs"
+      "types": "./dist/locales/fr/index.d.ts",
+      "default": "./dist/locales/fr/index.js"
     },
     "./locales/vi": {
-      "types": "./dist/locales/vi/index.d.mts",
-      "default": "./dist/locales/vi/index.mjs"
+      "types": "./dist/locales/vi/index.d.ts",
+      "default": "./dist/locales/vi/index.js"
     },
     "./locales/*.yaml": {
       "default": "./dist/locales/*.yaml"
     }
   },
-  "main": "./dist/index.mjs",
-  "types": "./dist/index.d.mts",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "files": [
     "README.md",
     "dist",
diff --git a/packages/i18n/tsdown.config.ts b/packages/i18n/tsdown.config.ts
index 23662e0ff..7da240f42 100644
--- a/packages/i18n/tsdown.config.ts
+++ b/packages/i18n/tsdown.config.ts
@@ -13,7 +13,6 @@ export default defineConfig({
     { from: 'src/locales', to: 'dist/locales' },
   ],
   unbundle: true,
-  fixedExtension: true,
   plugins: [
     Yaml(),
   ],