diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
index decb0f154..65206cf9a 100644
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## Unreleased - 2021-xx-xx
 ### Changed
+* `ContentEncoding` is now marked `#[non_exhaustive]`. [#2377]
 * Minimum supported Rust version (MSRV) is now 1.51.
 
 ### Fixed
@@ -12,6 +13,7 @@
 [#2364]: https://github.com/actix/actix-web/pull/2364
 [#2375]: https://github.com/actix/actix-web/pull/2375
 [#2344]: https://github.com/actix/actix-web/pull/2344
+[#2377]: https://github.com/actix/actix-web/pull/2377
 
 
 ## 3.0.0-beta.8 - 2021-08-09