diff --git a/.all-contributorsrc b/.all-contributorsrc
index 8a6bef7f..ae9e74db 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -200,6 +200,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "MH4GF",
+      "name": "Hirotaka Miyagi",
+      "avatar_url": "https://avatars.githubusercontent.com/u/31152321?v=4",
+      "profile": "https://mh4gf.dev",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "projectName": "jest-coverage-report-action",
diff --git a/README.md b/README.md
index 4bce3ec9..538971d3 100644
--- a/README.md
+++ b/README.md
@@ -230,6 +230,9 @@ Jest Coverage Report action is made with <3 thanks to these wonderful people
     <td align="center"><a href="http://tommasoferrari.com"><img src="https://avatars.githubusercontent.com/u/927264?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tommaso Ferrari</b></sub></a><br /><a href="https://github.com/ArtiomTr/jest-coverage-report-action/commits?author=raspo" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Raigen"><img src="https://avatars.githubusercontent.com/u/894799?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Florian</b></sub></a><br /><a href="https://github.com/ArtiomTr/jest-coverage-report-action/commits?author=Raigen" title="Code">💻</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="https://mh4gf.dev"><img src="https://avatars.githubusercontent.com/u/31152321?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hirotaka Miyagi</b></sub></a><br /><a href="https://github.com/ArtiomTr/jest-coverage-report-action/commits?author=MH4GF" title="Code">💻</a></td>
+  </tr>
 </table>
 
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