diff --git a/libc/docs/CHANGES.TXT b/libc/docs/CHANGES.TXT
index 8e23c0e..3fbbee0 100644
--- a/libc/docs/CHANGES.TXT
+++ b/libc/docs/CHANGES.TXT
@@ -14,6 +14,8 @@
 - <sched.h>: Add sched_getcpu(), sched_getaffinity(), sched_setaffinity(),
   cpu_set_t and related macros (e.g. CPU_SETSIZE, CPU_ZERO, CPU_SET, ...)
 
+- <unistd.h>: Add ftruncate64().
+
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 Differences between Android 2.3 and Android 2.2: