diff --git a/BUILD.md b/BUILD.md
index 9e6448cf..c8dd7079 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -67,7 +67,7 @@ If you are building classic Shairport Sync, the list of packages is shorter:
     libavutil-dev libavcodec-dev libavformat-dev
 ```
 
-Building on Ubuntu 24.10, and possibly other distributions, requires `systemd-dev`. It does no harm to attempt to install it -- it will simply fail if the package doesn't exist:
+Building on Ubuntu 24.10 or Debian 13 ("Trixie") and later -- and possibly on other distributions -- requires `systemd-dev`. It does no harm to attempt to install it -- the install will simply fail if the package doesn't exist:
 ```
 # apt install --no-install-recommends systemd-dev # it's okay if this fails because the package doesn't exist
 ```