diff --git a/.all-contributorsrc b/.all-contributorsrc
index 042e9df0..9818f8d6 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -320,9 +320,12 @@
       "avatar_url": "https://avatars3.githubusercontent.com/u/2117655?v=4",
       "profile": "https://sunknudsen.com",
       "contributions": [
+        "code",
         "bug",
         "ideas",
-        "example"
+        "example",
+        "review",
+        "test"
       ]
     },
     {
@@ -331,9 +334,13 @@
       "avatar_url": "https://avatars3.githubusercontent.com/u/10801221?v=4",
       "profile": "http://dougg0k.js.org",
       "contributions": [
+        "code",
+        "doc",
         "bug",
         "ideas",
-        "example"
+        "example",
+        "review",
+        "test"
       ]
     },
     {
diff --git a/AUTHORS b/AUTHORS
index 942b507f..0d987e1f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -8,3 +8,5 @@ Ludwig Frank (https://github.com/ludwigfrank)
 Rahul Gaba <rahulgaba16@gmail.com> (http://rahulgaba.com)
 Spencer Davis (https://github.com/spencerfdavis)
 dnlnvl (https://github.com/dnlnvl)
+Douglas Galdino <dougg0k@gmail.com> (https://dougg0k.js.org)
+Sun Knudsen (https://sunknudsen.com)
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 867535b1..bbc3cf3f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [4.2.0] - 2020-03-07
+
+### Added
+* support for typescript (https://github.com/rpearce/react-medium-image-zoom/issues/219 and https://github.com/rpearce/react-medium-image-zoom/issues/220; thanks to @dougg0k and @sunknudsen)
+
 ## [4.1.0] - 2020-03-05
 
 ### Added
diff --git a/README.md b/README.md
index c73e4cce..5924e0b5 100644
--- a/README.md
+++ b/README.md
@@ -275,8 +275,8 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
   <tr>
     <td align="center"><a href="https://github.com/henrych4"><img src="https://avatars0.githubusercontent.com/u/19466940?v=4" width="100px;" alt=""/><br /><sub><b>hhh</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Ahenrych4" title="Bug reports">🐛</a></td>
     <td align="center"><a href="https://github.com/davalapar"><img src="https://avatars0.githubusercontent.com/u/41451953?v=4" width="100px;" alt=""/><br /><sub><b>@davalapar</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Adavalapar" title="Bug reports">🐛</a></td>
-    <td align="center"><a href="https://sunknudsen.com"><img src="https://avatars3.githubusercontent.com/u/2117655?v=4" width="100px;" alt=""/><br /><sub><b>Sun Knudsen</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Asunknudsen" title="Bug reports">🐛</a> <a href="#ideas-sunknudsen" title="Ideas, Planning, & Feedback">🤔</a> <a href="#example-sunknudsen" title="Examples">💡</a></td>
-    <td align="center"><a href="http://dougg0k.js.org"><img src="https://avatars3.githubusercontent.com/u/10801221?v=4" width="100px;" alt=""/><br /><sub><b>Douglas Galdino</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Adougg0k" title="Bug reports">🐛</a> <a href="#ideas-dougg0k" title="Ideas, Planning, & Feedback">🤔</a> <a href="#example-dougg0k" title="Examples">💡</a></td>
+    <td align="center"><a href="https://sunknudsen.com"><img src="https://avatars3.githubusercontent.com/u/2117655?v=4" width="100px;" alt=""/><br /><sub><b>Sun Knudsen</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/commits?author=sunknudsen" title="Code">💻</a> <a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Asunknudsen" title="Bug reports">🐛</a> <a href="#ideas-sunknudsen" title="Ideas, Planning, & Feedback">🤔</a> <a href="#example-sunknudsen" title="Examples">💡</a> <a href="https://github.com/rpearce/react-medium-image-zoom/pulls?q=is%3Apr+reviewed-by%3Asunknudsen" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/rpearce/react-medium-image-zoom/commits?author=sunknudsen" title="Tests">⚠️</a></td>
+    <td align="center"><a href="http://dougg0k.js.org"><img src="https://avatars3.githubusercontent.com/u/10801221?v=4" width="100px;" alt=""/><br /><sub><b>Douglas Galdino</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/commits?author=dougg0k" title="Code">💻</a> <a href="https://github.com/rpearce/react-medium-image-zoom/commits?author=dougg0k" title="Documentation">📖</a> <a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3Adougg0k" title="Bug reports">🐛</a> <a href="#ideas-dougg0k" title="Ideas, Planning, & Feedback">🤔</a> <a href="#example-dougg0k" title="Examples">💡</a> <a href="https://github.com/rpearce/react-medium-image-zoom/pulls?q=is%3Apr+reviewed-by%3Adougg0k" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/rpearce/react-medium-image-zoom/commits?author=dougg0k" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://mohammedfaragallah.herokuapp.com"><img src="https://avatars0.githubusercontent.com/u/14910456?v=4" width="100px;" alt=""/><br /><sub><b>Mohammed Faragallah</b></sub></a><br /><a href="https://github.com/rpearce/react-medium-image-zoom/issues?q=author%3AMohammedFaragallah" title="Bug reports">🐛</a> <a href="#ideas-MohammedFaragallah" title="Ideas, Planning, & Feedback">🤔</a> <a href="#example-MohammedFaragallah" title="Examples">💡</a></td>
   </tr>
 </table>
diff --git a/package.json b/package.json
index b84f8476..0bde8e16 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-medium-image-zoom",
-  "version": "4.1.0",
+  "version": "4.2.0",
   "description": "Accessible medium.com-style image zoom for React",
   "main": "dist/cjs/index.js",
   "module": "dist/esm/index.js",