diff --git a/COPYRIGHT.md b/COPYRIGHT.md
index ea8e24c0..e4f97a33 100644
--- a/COPYRIGHT.md
+++ b/COPYRIGHT.md
@@ -13,6 +13,7 @@ Copyright holders:
 3rd party dependencies comes with their respective licenses.
 
 Thanks to David Revoy for his work on Peertube's mascot, [Sepia](https://www.davidrevoy.com/index.php?tag/peertube).
+The character design is under CC-By licence, and the SVG files used to create some logo and avatars in this plugin are GPLv3.0.
 
 Some material icons downloaded from this website where used for icons: [Material.io](https://material.io/resources/icons).
 
diff --git a/README.fr.md b/README.fr.md
index 228f51fe..5c8968c3 100644
--- a/README.fr.md
+++ b/README.fr.md
@@ -41,6 +41,7 @@ Merci de vous référer à la page [CONTRIBUTING.fr.md](CONTRIBUTING.fr.md).
 Les fichiers [package.json](package.json), [COPYRIGHT](COPYRIGHT.md) et [LICENSE](LICENSE) contiennent les informations sur la licence du présent logiciel (en anglais).
 
 Merci à David Revoy pour son travail sur la mascotte de Peertube, [Sepia](https://www.davidrevoy.com/index.php?tag/peertube).
+Le character design est en licence CC-By, et les fichiers SVG utilisés pour créer certains logos et avatars en GPLv3.0.
 
 Merci à [Framasoft](https://framasoft.org) pour avoir rendu [Peertube](https://joinpeertube.org/) possible, et pour le support financier.
 
diff --git a/README.md b/README.md
index 19107739..16c8fe69 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ Please refer to the page [CONTRIBUTING.md](CONTRIBUTING.md).
 [package.json](package.json), [COPYRIGHT](COPYRIGHT.md) and [LICENSE](LICENSE) files contain the license information for this software and its dependencies.
 
 Thanks to David Revoy for his work on Peertube's mascot, [Sepia](https://www.davidrevoy.com/index.php?tag/peertube).
+The character design is under CC-By licence, and the SVG files used to create some logo and avatars in this plugin are GPLv3.0.
 
 Thanks to [Framasoft](https://framasoft.org) for making [Peertube](https://joinpeertube.org/) possible, and for the financial support.