diff --git a/CHANGES.md b/CHANGES.md
index 6493dcf..3e2c043 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,8 @@
+0.8.5 2022-07-19
+----------------
+
+- Do not vendor `io.h` now that OCaml exports it (@dra27).
+
 0.8.4 2022-05-10
 ----------------