diff --git a/.all-contributorsrc b/.all-contributorsrc
index 389ab19be4..48e3cd55e9 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -152,7 +152,8 @@
       "profile": "https://github.com/takuyaymd",
       "contributions": [
         "bug",
-        "code"
+        "code",
+        "maintenance"
       ]
     },
     {
diff --git a/README.md b/README.md
index bc060bbae5..760ed20d6a 100755
--- a/README.md
+++ b/README.md
@@ -285,7 +285,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/zchee"><img src="https://avatars.githubusercontent.com/u/6366270?v=4?s=100" width="100px;" alt="Koichi Shiraishi"/><br /><sub><b>Koichi Shiraishi</b></sub></a><br /><a href="#a11y-zchee" title="Accessibility">️️️️♿️</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/liusy182"><img src="https://avatars.githubusercontent.com/u/3293332?v=4?s=100" width="100px;" alt="Siyuan Liu"/><br /><sub><b>Siyuan Liu</b></sub></a><br /><a href="#a11y-liusy182" title="Accessibility">️️️️♿️</a> <a href="#example-liusy182" title="Examples">💡</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/dotdc"><img src="https://avatars.githubusercontent.com/u/12827900?v=4?s=100" width="100px;" alt="David Calvert"/><br /><sub><b>David Calvert</b></sub></a><br /><a href="https://github.com/vdaas/vald/commits?author=dotdc" title="Documentation">📖</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="https://github.com/takuyaymd"><img src="https://avatars.githubusercontent.com/u/49614391?v=4?s=100" width="100px;" alt="takuyaymd"/><br /><sub><b>takuyaymd</b></sub></a><br /><a href="https://github.com/vdaas/vald/issues?q=author%3Atakuyaymd" title="Bug reports">🐛</a> <a href="https://github.com/vdaas/vald/commits?author=takuyaymd" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/takuyaymd"><img src="https://avatars.githubusercontent.com/u/49614391?v=4?s=100" width="100px;" alt="takuyaymd"/><br /><sub><b>takuyaymd</b></sub></a><br /><a href="https://github.com/vdaas/vald/issues?q=author%3Atakuyaymd" title="Bug reports">🐛</a> <a href="https://github.com/vdaas/vald/commits?author=takuyaymd" title="Code">💻</a> <a href="#maintenance-takuyaymd" title="Maintenance">🚧</a></td>
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/junsei-ando"><img src="https://avatars.githubusercontent.com/u/1892077?v=4?s=100" width="100px;" alt="junsei-ando"/><br /><sub><b>junsei-ando</b></sub></a><br /><a href="https://github.com/vdaas/vald/commits?author=junsei-ando" title="Documentation">📖</a></td>