diff --git a/24.md b/24.md
index 0094d58d8e..38355a7ddb 100644
--- a/24.md
+++ b/24.md
@@ -17,6 +17,7 @@ These are extra fields not specified in NIP-01 that may be present in the string
   - `banner`: an URL to a wide (~1024x768) picture to be optionally displayed in the background of a profile screen.
   - `bot`: a boolean to clarify that the content is entirely or partially the result of automation, such as with chatbots or newsfeeds.
   - `birthday`: an object representing the author's birth date. The format is { "year": number, "month": number, "day": number }. Each field MAY be omitted.
+  - `languages`: an array of strings representing the author's preferred languages (in order of preference), each in the format defined by [IETF BCP 47](https://tools.ietf.org/html/bcp47) (e.g., `["en", "ja"]`, `["es-AR", "en-US"]`). The first element is the primary language.
 
 #### Deprecated fields