diff --git a/.all-contributorsrc b/.all-contributorsrc
index ebb816123..db0777505 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -69,13 +69,6 @@
             "profile": "https://github.com/didier-durand",
             "contributions": []
         },
-        {
-            "login": "V0XNIHILI",
-            "name": "Douwe den Blanken",
-            "avatar_url": "https://avatars.githubusercontent.com/V0XNIHILI",
-            "profile": "https://github.com/V0XNIHILI",
-            "contributions": []
-        },
         {
             "login": "18jeffreyma",
             "name": "Jeffrey Ma",
@@ -83,6 +76,13 @@
             "profile": "https://github.com/18jeffreyma",
             "contributions": []
         },
+        {
+            "login": "V0XNIHILI",
+            "name": "Douwe den Blanken",
+            "avatar_url": "https://avatars.githubusercontent.com/V0XNIHILI",
+            "profile": "https://github.com/V0XNIHILI",
+            "contributions": []
+        },
         {
             "login": "shanzehbatool",
             "name": "shanzehbatool",
@@ -160,13 +160,6 @@
             "profile": "https://github.com/foundingnimo",
             "contributions": []
         },
-        {
-            "login": "zishenwan",
-            "name": "Zishen Wan",
-            "avatar_url": "https://avatars.githubusercontent.com/zishenwan",
-            "profile": "https://github.com/zishenwan",
-            "contributions": []
-        },
         {
             "login": "minhdang26403",
             "name": "Dang Truong",
@@ -174,6 +167,13 @@
             "profile": "https://github.com/minhdang26403",
             "contributions": []
         },
+        {
+            "login": "zishenwan",
+            "name": "Zishen Wan",
+            "avatar_url": "https://avatars.githubusercontent.com/zishenwan",
+            "profile": "https://github.com/zishenwan",
+            "contributions": []
+        },
         {
             "login": "colbybanbury",
             "name": "Colby Banbury",
@@ -202,13 +202,6 @@
             "profile": "https://github.com/ma3mool",
             "contributions": []
         },
-        {
-            "login": "srivatsankrishnan",
-            "name": "Srivatsan Krishnan",
-            "avatar_url": "https://avatars.githubusercontent.com/srivatsankrishnan",
-            "profile": "https://github.com/srivatsankrishnan",
-            "contributions": []
-        },
         {
             "login": "DivyaAmirtharaj",
             "name": "Divya Amirtharaj",
@@ -216,6 +209,13 @@
             "profile": "https://github.com/DivyaAmirtharaj",
             "contributions": []
         },
+        {
+            "login": "srivatsankrishnan",
+            "name": "Srivatsan Krishnan",
+            "avatar_url": "https://avatars.githubusercontent.com/srivatsankrishnan",
+            "profile": "https://github.com/srivatsankrishnan",
+            "contributions": []
+        },
         {
             "login": "James-QiuHaoran",
             "name": "Haoran Qiu",
@@ -223,13 +223,6 @@
             "profile": "https://github.com/James-QiuHaoran",
             "contributions": []
         },
-        {
-            "login": "arnaumarin",
-            "name": "marin-llobet",
-            "avatar_url": "https://avatars.githubusercontent.com/arnaumarin",
-            "profile": "https://github.com/arnaumarin",
-            "contributions": []
-        },
         {
             "login": "aptl26",
             "name": "Aghyad Deeb",
@@ -237,6 +230,13 @@
             "profile": "https://github.com/aptl26",
             "contributions": []
         },
+        {
+            "login": "arnaumarin",
+            "name": "marin-llobet",
+            "avatar_url": "https://avatars.githubusercontent.com/arnaumarin",
+            "profile": "https://github.com/arnaumarin",
+            "contributions": []
+        },
         {
             "login": "VThuong99",
             "name": "Thuong Duong",
@@ -251,6 +251,13 @@
             "profile": "https://github.com/AditiR-42",
             "contributions": []
         },
+        {
+            "login": "ELSuitorHarvard",
+            "name": "ELSuitorHarvard",
+            "avatar_url": "https://avatars.githubusercontent.com/ELSuitorHarvard",
+            "profile": "https://github.com/ELSuitorHarvard",
+            "contributions": []
+        },
         {
             "login": "kaiM0ves",
             "name": "kaiM0ves",
@@ -279,13 +286,6 @@
             "profile": "https://github.com/oishib",
             "contributions": []
         },
-        {
-            "login": "ELSuitorHarvard",
-            "name": "ELSuitorHarvard",
-            "avatar_url": "https://avatars.githubusercontent.com/ELSuitorHarvard",
-            "profile": "https://github.com/ELSuitorHarvard",
-            "contributions": []
-        },
         {
             "login": "Ekhao",
             "name": "Emil Njor",
@@ -293,13 +293,6 @@
             "profile": "https://github.com/Ekhao",
             "contributions": []
         },
-        {
-            "login": "BaeHenryS",
-            "name": "Henry Bae",
-            "avatar_url": "https://avatars.githubusercontent.com/BaeHenryS",
-            "profile": "https://github.com/BaeHenryS",
-            "contributions": []
-        },
         {
             "login": "jaywonchung",
             "name": "Jae-Won Chung",
@@ -307,6 +300,20 @@
             "profile": "https://github.com/jaywonchung",
             "contributions": []
         },
+        {
+            "login": "leo47007",
+            "name": "Yu-Shun Hsiao",
+            "avatar_url": "https://avatars.githubusercontent.com/leo47007",
+            "profile": "https://github.com/leo47007",
+            "contributions": []
+        },
+        {
+            "login": "BaeHenryS",
+            "name": "Henry Bae",
+            "avatar_url": "https://avatars.githubusercontent.com/BaeHenryS",
+            "profile": "https://github.com/BaeHenryS",
+            "contributions": []
+        },
         {
             "login": "eimlav",
             "name": "Eimhin Laverty",
@@ -315,10 +322,10 @@
             "contributions": []
         },
         {
-            "login": "leo47007",
-            "name": "Yu-Shun Hsiao",
-            "avatar_url": "https://avatars.githubusercontent.com/leo47007",
-            "profile": "https://github.com/leo47007",
+            "login": "pongtr",
+            "name": "Pong Trairatvorakul",
+            "avatar_url": "https://avatars.githubusercontent.com/pongtr",
+            "profile": "https://github.com/pongtr",
             "contributions": []
         },
         {
@@ -329,10 +336,10 @@
             "contributions": []
         },
         {
-            "login": "pongtr",
-            "name": "Pong Trairatvorakul",
-            "avatar_url": "https://avatars.githubusercontent.com/pongtr",
-            "profile": "https://github.com/pongtr",
+            "login": "Emeka Ezike",
+            "name": "Emeka Ezike",
+            "avatar_url": "https://www.gravatar.com/avatar/af39c27c6090c50a1921a9b6366e81cc?d=identicon&s=100",
+            "profile": "https://github.com/harvard-edge/cs249r_book/graphs/contributors",
             "contributions": []
         },
         {
@@ -349,6 +356,13 @@
             "profile": "https://github.com/aryatschand",
             "contributions": []
         },
+        {
+            "login": "AndreaMattiaGaravagno",
+            "name": "AndreaMattiaGaravagno",
+            "avatar_url": "https://avatars.githubusercontent.com/AndreaMattiaGaravagno",
+            "profile": "https://github.com/AndreaMattiaGaravagno",
+            "contributions": []
+        },
         {
             "login": "arbass22",
             "name": "Andrew Bass",
@@ -356,13 +370,6 @@
             "profile": "https://github.com/arbass22",
             "contributions": []
         },
-        {
-            "login": "Emeka Ezike",
-            "name": "Emeka Ezike",
-            "avatar_url": "https://www.gravatar.com/avatar/af39c27c6090c50a1921a9b6366e81cc?d=identicon&s=100",
-            "profile": "https://github.com/harvard-edge/cs249r_book/graphs/contributors",
-            "contributions": []
-        },
         {
             "login": "marcozennaro",
             "name": "Marco Zennaro",
diff --git a/README.md b/README.md
index da6b9b2f5..68a5e9a95 100644
--- a/README.md
+++ b/README.md
@@ -426,7 +426,6 @@ 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/AndreaMattiaGaravagno"><img src="https://avatars.githubusercontent.com/u/22458187?v=4?v=4?s=50" width="50px;" alt="AndreaMattiaGaravagno"/><br /><sub><b>AndreaMattiaGaravagno</b></sub></a><br />🧑‍💻</td>
     </tr>
   </tbody>
 </table>
diff --git a/book/README.md b/book/README.md
index 2c3b04368..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/AndreaMattiaGaravagno"><img src="https://avatars.githubusercontent.com/u/22458187?v=4?v=4?s=80" width="80px;" alt="AndreaMattiaGaravagno"/><br /><sub><b>AndreaMattiaGaravagno</b></sub></a><br />🧑‍💻</td>
     </tr>
   </tbody>
 </table>