diff --git a/README.md b/README.md
index 1ca1503bb..3768e942c 100644
--- a/README.md
+++ b/README.md
@@ -195,14 +195,16 @@ Please see the [Contribution Guide](./CONTRIBUTING.md).
 <table><tr>
 <td><img src="https://c10.patreonusercontent.com/3/eyJ3IjoyMDB9/patreon-media/p/user/5731881/4b6038e6cda34c04b83a5fcce3806a93/1.png?token-time=2145916800&token-hash=hBayGfOmQH3kRMdNnDe4oCZD_9fsJWSt29xXR3KRMVk%3D" alt="Nokotaro Takeda" width="100"></td>
 <td><img src="https://c8.patreon.com/2/200/23932002" alt="nenohi " width="100"></td>
+<td><img src="https://c10.patreonusercontent.com/3/eyJ3IjoyMDB9/patreon-media/p/user/9481273/7fa89168e72943859c3d3c96e424ed31/4.jpeg?token-time=2145916800&token-hash=5w1QV1qXe-NdWbdFmp1H7O_-QBsSiV0haumk3XTHIEg%3D" alt="Efertone " width="100"></td>
 <td><img src="https://c10.patreonusercontent.com/3/eyJ3IjoyMDB9/patreon-media/p/user/12531784/93a45137841849329ba692da92ac7c60/1.jpeg?token-time=2145916800&token-hash=vGe7wXGqmA8Q7m-kDNb6fyGdwk-Dxk4F-ut8ZZu51RM%3D" alt="Takashi Shibuya" width="100"></td>
 </tr><tr>
 <td><a href="https://www.patreon.com/takenoko">Nokotaro Takeda</a></td>
 <td><a href="https://www.patreon.com/user?u=23932002">nenohi </a></td>
+<td><a href="https://www.patreon.com/efertone">Efertone </a></td>
 <td><a href="https://www.patreon.com/user?u=12531784">Takashi Shibuya</a></td>
 </tr></table>
 
-**Last updated:** Sat, 02 May 2020 04:00:09 UTC
+**Last updated:** Thu, 07 May 2020 18:00:08 UTC
 <!-- PATREON_END -->
 
 [backer-url]: #backers