diff --git a/packages/ss6player-lib/README.md b/packages/ss6player-lib/README.md
index e66ebdb..f2c765d 100644
--- a/packages/ss6player-lib/README.md
+++ b/packages/ss6player-lib/README.md
@@ -29,7 +29,7 @@ npm i
 npm run build
 ```
 
-ビルドが成功すると `ss6player-lib.umd.js` と `ss6player-lib.es5.js` が `SS6PlayerForWeb/packages/ss6player-lib/dist` ディレクトリ以下に生成されます。
+ビルドが成功すると `ss6player-lib.umd.js` と `ss6player-lib.es6.js` が `SS6PlayerForWeb/packages/ss6player-lib/dist` ディレクトリ以下に生成されます。
 
 ### 単独ビルド
 
diff --git a/packages/ss6player-lib/package.json b/packages/ss6player-lib/package.json
index d85684e..1588944 100644
--- a/packages/ss6player-lib/package.json
+++ b/packages/ss6player-lib/package.json
@@ -6,7 +6,7 @@
     "SpriteStudio"
   ],
   "main": "dist/ss6player-lib.umd.js",
-  "module": "dist/ss6player-lib.es5.js",
+  "module": "dist/ss6player-lib.es6.js",
   "typings": "dist/types/ss6player-lib.d.ts",
   "bugs": {
     "url": "https://github.com/SpriteStudio/SS6PlayerForWeb/issues"
diff --git a/packages/ss6player-pixi/README.md b/packages/ss6player-pixi/README.md
index 8e350a8..6ed8ff3 100644
--- a/packages/ss6player-pixi/README.md
+++ b/packages/ss6player-pixi/README.md
@@ -55,7 +55,7 @@ npm i
 npm run build
 ```
 
-ビルドが成功すると `ss6player-pixi.umd.js` と `ss6player-pixi.es5.js` が `SS6PlayerForWeb/packages/ss6player-pixi/dist` ディレクトリ以下に生成されます。
+ビルドが成功すると `ss6player-pixi.umd.js` と `ss6player-pixi.es6.js` が `SS6PlayerForWeb/packages/ss6player-pixi/dist` ディレクトリ以下に生成されます。
 
 ### 単独ビルド
 
diff --git a/packages/ss6player-pixi/package.json b/packages/ss6player-pixi/package.json
index 8508e2a..99aceee 100644
--- a/packages/ss6player-pixi/package.json
+++ b/packages/ss6player-pixi/package.json
@@ -13,7 +13,7 @@
     "pixi"
   ],
   "main": "dist/ss6player-pixi.umd.js",
-  "module": "dist/ss6player-pixi.es5.js",
+  "module": "dist/ss6player-pixi.es6.js",
   "typings": "dist/types/ss6player-pixi.d.ts",
   "bugs": {
     "url": "https://github.com/SpriteStudio/SS6PlayerForWeb/issues"
diff --git a/packages/ss6player-pixi6/README.md b/packages/ss6player-pixi6/README.md
index 4c7e166..5dd6f05 100644
--- a/packages/ss6player-pixi6/README.md
+++ b/packages/ss6player-pixi6/README.md
@@ -55,7 +55,7 @@ npm i
 npm run build
 ```
 
-ビルドが成功すると `ss6player-pixi6.umd.js` と `ss6player-pixi6.es5.js` が `SS6PlayerForWeb/packages/ss6player-pixi6/dist` ディレクトリ以下に生成されます。
+ビルドが成功すると `ss6player-pixi6.umd.js` と `ss6player-pixi6.es6.js` が `SS6PlayerForWeb/packages/ss6player-pixi6/dist` ディレクトリ以下に生成されます。
 
 ### 単独ビルド
 
diff --git a/packages/ss6player-pixi6/package.json b/packages/ss6player-pixi6/package.json
index 6773b4f..0b1183c 100644
--- a/packages/ss6player-pixi6/package.json
+++ b/packages/ss6player-pixi6/package.json
@@ -13,7 +13,7 @@
     "pixi"
   ],
   "main": "dist/ss6player-pixi6.umd.js",
-  "module": "dist/ss6player-pixi6.es5.js",
+  "module": "dist/ss6player-pixi6.es6.js",
   "typings": "dist/types/ss6player-pixi6.d.ts",
   "bugs": {
     "url": "https://github.com/SpriteStudio/SS6PlayerForWeb/issues"
diff --git a/packages/ss6player-viewer/README.md b/packages/ss6player-viewer/README.md
index 3ab93b6..3b14366 100644
--- a/packages/ss6player-viewer/README.md
+++ b/packages/ss6player-viewer/README.md
@@ -52,7 +52,7 @@ npm i
 npm run build
 ```
 
-ビルドが成功すると `ss6player-viewer.umd.js` と `ss6player-viewer.min.js` と `ss6player-viewer.es5.js` が `SS6PlayerForWeb/packages/ss6player-viewer/dist` ディレクトリ以下に生成されます。
+ビルドが成功すると `ss6player-viewer.umd.js` と `ss6player-viewer.min.js` と `ss6player-viewer.es6.js` が `SS6PlayerForWeb/packages/ss6player-viewer/dist` ディレクトリ以下に生成されます。
 
 ### 単独ビルド
 
diff --git a/packages/ss6player-viewer/package.json b/packages/ss6player-viewer/package.json
index 51975a6..15c328a 100644
--- a/packages/ss6player-viewer/package.json
+++ b/packages/ss6player-viewer/package.json
@@ -13,7 +13,7 @@
     "pixi.js"
   ],
   "main": "dist/ss6player-viewer.umd.js",
-  "module": "dist/ss6player-viewer.es5.js",
+  "module": "dist/ss6player-viewer.es6.js",
   "typings": "dist/types/ss6player-viewer.d.ts",
   "bugs": {
     "url": "https://github.com/SpriteStudio/SS6PlayerForWeb/issues"
diff --git a/packages/ssfblib/README.md b/packages/ssfblib/README.md
index 855fc5a..b92d0c3 100644
--- a/packages/ssfblib/README.md
+++ b/packages/ssfblib/README.md
@@ -36,7 +36,7 @@ npm i
 npm run build
 ```
 
-ビルドが成功すると `ssfblib.umd.js` と `ssfblib.es5.js` が `SS6PlayerForWeb/packages/ssfblib/dist` ディレクトリ以下に生成されます。
+ビルドが成功すると `ssfblib.umd.js` と `ssfblib.es6.js` が `SS6PlayerForWeb/packages/ssfblib/dist` ディレクトリ以下に生成されます。
 
 ### 単独ビルド
 
diff --git a/packages/ssfblib/package.json b/packages/ssfblib/package.json
index cbab4f9..54b84fa 100644
--- a/packages/ssfblib/package.json
+++ b/packages/ssfblib/package.json
@@ -6,7 +6,7 @@
     "SpriteStudio"
   ],
   "main": "dist/ssfblib.umd.js",
-  "module": "dist/ssfblib.es5.js",
+  "module": "dist/ssfblib.es6.js",
   "typings": "dist/types/ssfblib.d.ts",
   "bugs": {
     "url": "https://github.com/SpriteStudio/SS6PlayerForWeb/issues"
diff --git a/tsconfig.json b/tsconfig.json
index 276fe0b..0662c96 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "moduleResolution": "node",
-    "target": "es5",
+    "target": "es6",
     "module":"es2022",
     "lib": ["es2015", "es2016", "es2017", "es2020", "es2022", "dom"],
     "strict": false,