diff --git a/docs/status.md b/docs/status.md
index bf246a6..de1eed1 100644
--- a/docs/status.md
+++ b/docs/status.md
@@ -29,6 +29,7 @@
   * `gethostid`
   * `shm_open`/`shm_unlink`
   * `sockatmark`
+  * `ualarm`
 
 Missing functionality:
   * `<aio.h>`