diff --git a/.all-contributorsrc b/.all-contributorsrc
index c7d6637a9..1e49b8d91 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -291,6 +291,15 @@
         "code"
       ]
     },
+    {
+      "login": "yosfik",
+      "name": "Yosfik Alqadri",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/4850270?v=4",
+      "profile": "https://github.com/yosfik",
+      "contributions": [
+        "code"
+      ]
+    },
     {
       "login": "7agustibm",
       "name": "Agustí Becerra Milà",
diff --git a/README.md b/README.md
index c9429805b..74c9220bc 100644
--- a/README.md
+++ b/README.md
@@ -185,6 +185,7 @@ This project is licensed under the terms of the MIT license.
   <tr>
     <td align="center"><a href="https://github.com/Juaanma"><img src="https://avatars3.githubusercontent.com/u/7390500?v=4" width="100px;" alt=""/><br /><sub><b>Juan Manuel Suárez</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Juaanma" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/7agustibm"><img src="https://avatars0.githubusercontent.com/u/8149332?v=4" width="100px;" alt=""/><br /><sub><b>Agustí Becerra Milà</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=7agustibm" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/yosfik"><img src="https://avatars3.githubusercontent.com/u/4850270?v=4" width="100px;" alt=""/><br /><sub><b>Yosfik Alqadri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=yosfik" title="Code">💻</a></td>
   </tr>
   <tr>
   </tr>