diff --git a/.all-contributorsrc b/.all-contributorsrc
index 74b95f6b..cf63ab3a 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -78,6 +78,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "massongit",
+      "name": "Masaya Suzuki",
+      "avatar_url": "https://avatars.githubusercontent.com/u/15100604?v=4",
+      "profile": "https://qiita.com/SUZUKI_Masaya",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,
diff --git a/README.md b/README.md
index 5d1fbfdd..d3b7eaaa 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![Windows](https://img.shields.io/badge/Windows-0078D6?logo=windows\&logoColor=white)](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idruns-on)
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-8-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-9-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ## changed-files
@@ -303,6 +303,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/wushujames"><img src="https://avatars.githubusercontent.com/u/677529?v=4?s=100" width="100px;" alt=""/><br /><sub><b>James Cheng</b></sub></a><br /><a href="https://github.com/tj-actions/changed-files/commits?author=wushujames" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://qiita.com/SUZUKI_Masaya"><img src="https://avatars.githubusercontent.com/u/15100604?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Masaya Suzuki</b></sub></a><br /><a href="https://github.com/tj-actions/changed-files/commits?author=massongit" title="Code">💻</a></td>
   </tr>
 </table>