diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index fd49353ec4..e038bc5160 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -2329,7 +2329,7 @@ philbertotis</b></sub></a><br /><a href="https://github.com/philbertotis/bank" t
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           <td align="center" valign="top" width="14.28%"><a href="https://github.com/AlexZhao6666"><img src="https://avatars.githubusercontent.com/u/136443781?s=80&u=4743c33c7861268ebd95ea89d906fd6b415f4a67&v=4?s=100" width="100px;" alt="AlexZhao6666"/><br /><sub><b>
 AlexZhao6666</b></sub></a><br /><a href="https://github.com/AlexZhao6666/double-color-ball/tree/main/contract/double_color_ball" title="Content">🖋</a></td>
-          <td align="center" valign="top" width="14.28%"><a href="https://github.com/chenxudongok"><img src="https://avatars.githubusercontent.com/u/11802831?s=80&u=b8bbb6c06b0ed89bfe35d8e93a43c250837388f8&v=4?s=100" width="100px;" alt="chenxudongok"/><br /><sub><b>chenxudongok</b></sub></a><br /><a href="https://github.com/chenxudongok/aleo" title="Tutorial">✅</a></td>
+          <td align="center" valign="top" width="14.28%"><a href="https://github.com/chenxudongok"><img src="https://avatars.githubusercontent.com/u/11802831?s=80&u=b8bbb6c06b0ed89bfe35d8e93a43c250837388f8&v=4?s=100" width="100px;" alt="chenxudongok"/><br /><sub><b>chenxudongok</b></sub></a><br /><a href="https://github.com/chenxudongok/aleo" title="Tutorial">✅</a></td><td align="center" valign="top" width="14.28%"><a href="https://github.com/mondalsona"><img src="https://avatars.githubusercontent.com/mondalsona?s=80&v=4?s=100" width="100px;" alt="mondalsona"/><br /><sub><b>mondalsona</b></sub></a><br /><a href="https://github.com/mondalsona/tictactoe.git" title="Tutorials">✅</a></td>
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   <tfoot>