diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index b62de20b..64c0247a 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -31,6 +31,7 @@ Thanks goes to these wonderful people who have contributed to this repository!
     <td align="center"><a href="https://github.com/hazolsky"><img src="https://avatars1.githubusercontent.com/u/1270790?v=4" width="100px;" alt="Misha Khokhlov"/><br /><sub><b>Misha Khokhlov</b></sub></a><br /><a href="#content-hazolsky" title="Content">🖋</a></td>
     <td align="center"><a href="https://plus.google.com/+ЕвгенийОрехов/"><img src="https://avatars3.githubusercontent.com/u/8045060?v=4" width="100px;" alt="Evgeny Orekhov"/><br /><sub><b>Evgeny Orekhov</b></sub></a><br /><a href="#content-EvgenyOrekhov" title="Content">🖋</a></td>
     <td align="center"><a href="https://github.com/gediminasml"><img src="https://avatars3.githubusercontent.com/u/19854105?v=4" width="100px;" alt="-"/><br /><sub><b>-</b></sub></a><br /><a href="#content-gediminasml" title="Content">🖋</a></td>
+    <td align="center"><a href="http://hisaac.net"><img src="https://avatars3.githubusercontent.com/u/923876?v=4" width="100px;" alt="Isaac Halvorson"/><br /><sub><b>Isaac Halvorson</b></sub></a><br /><a href="#content-hisaac" title="Content">🖋</a></td>
   </tr>
 </table>