diff --git a/CHANGES.md b/CHANGES.md
index 1e6598a..18c3e9d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,8 @@
+v2.2
+
+* faster generation of json via iolists
+* `repeat_keys` option
+
 v2.1
 
 * force the end of streams with `end_json` in addition to `end_stream`