diff --git a/README.md b/README.md
index d66504b2..95d1828f 100644
--- a/README.md
+++ b/README.md
@@ -82,8 +82,9 @@ Are you using this addon in your Thunderbird?
## Attributions
### Translations
-- Chinese (Simplified): [jeklau](https://github.com/jeklau)
-- Chinese (Traditional): [evez](https://github.com/evez)
+- Chinese (Simplified) (zh_Hans): [jeklau](https://github.com/jeklau)
+- Chinese (Traditional) (zh_Hant): [evez](https://github.com/evez)
+- Croatian (hr): Petar Jedvaj
- Czech (cs): [Fjuro](https://hosted.weblate.org/user/Fjuro/), [Jaroslav Staněk](https://hosted.weblate.org/user/jaroush/)
- French (fr): Generated automatically, [Noam](https://github.com/noam-sc)
- German (de): Generated automatically