Update changes log about the potential exit(normal) incompatibility
diff --git a/CHANGES.md b/CHANGES.md
index b5c61db..b625183 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,15 @@
+New version
+
+* Crashing client processes now exit with reason
+ `{shutdown, Error}`. This ensures processes
+ linked to the connection process are also
+ cleaned up. If exit `normal` was caught in a
+ request loop callback, for example in a
+ `try ... catch exit:normal ...` expression,
+ that expression might have to be updated to
+ handle the `{shutdown, Error}` error reason.
+ https://github.com/mochi/mochiweb/pull/238
+
Version 2.22.0 released 2021-08-23
* Renamed master branch to main
