diff --git a/.all-contributorsrc b/.all-contributorsrc
index 840c205a4..26ddb135c 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -225,7 +225,7 @@
       ]
     },
     {
-          "login": "woo-cie",
+      "login": "woo-cie",
       "name": "Makoto Yamada",
       "avatar_url": "https://avatars.githubusercontent.com/u/24642989?v=4",
       "profile": "https://github.com/woo-cie",
@@ -241,6 +241,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "WCWedin",
+      "name": "Ibby Wedin",
+      "avatar_url": "https://avatars.githubusercontent.com/u/110730?v=4",
+      "profile": "https://github.com/WCWedin",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "skipCi": true,
diff --git a/README.md b/README.md
index 650abc07e..e65d92e0e 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://benpigchu.com/"><img src="https://avatars.githubusercontent.com/u/9023067?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben "Pig" Chu</b></sub></a><br /><a href="https://github.com/three-types/three-ts-types/commits?author=benpigchu" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/woo-cie"><img src="https://avatars.githubusercontent.com/u/24642989?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Makoto Yamada</b></sub></a><br /><a href="https://github.com/three-types/three-ts-types/commits?author=woo-cie" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/schwyzl"><img src="https://avatars.githubusercontent.com/u/1556979?v=4?s=100" width="100px;" alt=""/><br /><sub><b>schwyzl</b></sub></a><br /><a href="https://github.com/three-types/three-ts-types/commits?author=schwyzl" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/WCWedin"><img src="https://avatars.githubusercontent.com/u/110730?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ibby Wedin</b></sub></a><br /><a href="https://github.com/three-types/three-ts-types/commits?author=WCWedin" title="Code">💻</a></td>
   </tr>
 </table>
 
diff --git a/types/three/src/materials/Material.d.ts b/types/three/src/materials/Material.d.ts
index f2a588bb1..675d6ae23 100644
--- a/types/three/src/materials/Material.d.ts
+++ b/types/three/src/materials/Material.d.ts
@@ -317,7 +317,7 @@ export class Material extends EventDispatcher {
      * If *null*, the value is opposite that of side, above.
      * @default null
      */
-    shadowSide: Side;
+    shadowSide: Side | null;
 
     /**
      * Defines whether this material is tone mapped according to the renderer's toneMapping setting.