diff --git a/README.md b/README.md
index 32175b188..48cc995fc 100644
--- a/README.md
+++ b/README.md
@@ -186,15 +186,17 @@ Please see the [Contribution Guide](./CONTRIBUTING.md).
 <td><img src="https://c10.patreonusercontent.com/3/eyJ3IjoyMDB9/patreon-media/p/user/4503830/ccf2cc867ea64de0b524bb2e24b9a1cb/1.jpeg?token-time=2145916800&token-hash=L55UhJ0rcuNAH3w_ryeeGN4hC6taoOixyAhraEi0bzw%3D" alt="dansup" width="100"></td>
 <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/dansup">dansup</a></td>
 <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:** Fri, 21 Feb 2020 13:39:06 UTC
+**Last updated:** Mon, 24 Feb 2020 00:28:06 UTC
 <!-- PATREON_END -->
 
 [backer-url]: #backers