diff --git a/README.md b/README.md
index 05bf257ee..4aac09a04 100644
--- a/README.md
+++ b/README.md
@@ -425,7 +425,6 @@ Thanks goes to these wonderful people who have contributed to making this resour
       <td align="center" valign="top" width="11.11%"><a href="https://github.com/harvard-edge/cs249r_book/graphs/contributors"><img src="https://www.gravatar.com/avatar/43b1feff77c8a95fd581774fb8ec891f?d=identicon&s=100?v=4?s=50" width="50px;" alt="Zishen"/><br /><sub><b>Zishen</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="11.11%"><a href="https://github.com/BunningsWarehouseOfficial"><img src="https://avatars.githubusercontent.com/u/49220945?v=4?v=4?s=50" width="50px;" alt="Kristian Radoš"/><br /><sub><b>Kristian Radoš</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="11.11%"><a href="https://github.com/minhdang26403"><img src="https://avatars.githubusercontent.com/u/86156224?v=4?v=4?s=50" width="50px;" alt="Dang Truong"/><br /><sub><b>Dang Truong</b></sub></a><br />🧑‍💻</td>
-      <td align="center" valign="top" width="11.11%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=50" width="50px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />✍️</td>
     </tr>
   </tbody>
 </table>
@@ -456,7 +455,7 @@ Thanks goes to these wonderful people who have contributed to making this resour
     </tr>
     <tr>
       <td align="center" valign="top" width="11.11%"><a href="https://github.com/wz1114841863"><img src="https://avatars.githubusercontent.com/wz1114841863?v=4?s=50" width="50px;" alt="wzz"/><br /><sub><b>wzz</b></sub></a><br />🪲</td>
-      <td align="center" valign="top" width="11.11%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=50" width="50px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />🧪</td>
+      <td align="center" valign="top" width="11.11%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=50" width="50px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="11.11%"><a href="https://github.com/keo-dara"><img src="https://avatars.githubusercontent.com/u/175544368?v=4?v=4?s=50" width="50px;" alt="keo-dara"/><br /><sub><b>keo-dara</b></sub></a><br />🪲</td>
     </tr>
   </tbody>
diff --git a/book/.all-contributorsrc b/book/.all-contributorsrc
index 5a24ac490..8b39bd8dc 100644
--- a/book/.all-contributorsrc
+++ b/book/.all-contributorsrc
@@ -961,15 +961,6 @@
             "contributions": [
                 "code"
             ]
-        },
-        {
-            "login": "ngbolin",
-            "name": "Ng Bo Lin",
-            "avatar_url": "https://avatars.githubusercontent.com/u/9389997?v=4",
-            "profile": "https://github.com/ngbolin",
-            "contributions": [
-                "doc"
-            ]
         }
     ]
 }
diff --git a/book/README.md b/book/README.md
index 52728fa61..51737d0c9 100644
--- a/book/README.md
+++ b/book/README.md
@@ -300,7 +300,6 @@ Thanks to these wonderful people who helped improve the book!
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/harvard-edge/cs249r_book/graphs/contributors"><img src="https://www.gravatar.com/avatar/43b1feff77c8a95fd581774fb8ec891f?d=identicon&s=100?v=4?s=80" width="80px;" alt="Zishen"/><br /><sub><b>Zishen</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/BunningsWarehouseOfficial"><img src="https://avatars.githubusercontent.com/u/49220945?v=4?v=4?s=80" width="80px;" alt="Kristian Radoš"/><br /><sub><b>Kristian Radoš</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/minhdang26403"><img src="https://avatars.githubusercontent.com/u/86156224?v=4?v=4?s=80" width="80px;" alt="Dang Truong"/><br /><sub><b>Dang Truong</b></sub></a><br />🧑‍💻</td>
-      <td align="center" valign="top" width="14.28%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=80" width="80px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />✍️</td>
     </tr>
   </tbody>
 </table>
diff --git a/tinytorch/README.md b/tinytorch/README.md
index 3d69dabb7..180c1c58f 100644
--- a/tinytorch/README.md
+++ b/tinytorch/README.md
@@ -279,7 +279,7 @@ Thanks to these wonderful people who helped improve TinyTorch!
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/jettythek"><img src="https://avatars.githubusercontent.com/jettythek?v=4?s=80" width="80px;" alt="jettythek"/><br /><sub><b>jettythek</b></sub></a><br />🧑‍💻</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/Takosaga"><img src="https://avatars.githubusercontent.com/Takosaga?v=4?s=80" width="80px;" alt="Takosaga"/><br /><sub><b>Takosaga</b></sub></a><br />🪲</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/wz1114841863"><img src="https://avatars.githubusercontent.com/wz1114841863?v=4?s=80" width="80px;" alt="wzz"/><br /><sub><b>wzz</b></sub></a><br />🪲</td>
-      <td align="center" valign="top" width="14.28%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=80" width="80px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />🧪</td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/ngbolin"><img src="https://avatars.githubusercontent.com/u/9389997?v=4?v=4?s=80" width="80px;" alt="Ng Bo Lin"/><br /><sub><b>Ng Bo Lin</b></sub></a><br />✍️</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/keo-dara"><img src="https://avatars.githubusercontent.com/u/175544368?v=4?v=4?s=80" width="80px;" alt="keo-dara"/><br /><sub><b>keo-dara</b></sub></a><br />🪲</td>
     </tr>
   </tbody>