diff --git a/MIGRATION.md b/MIGRATION.md
index 672aa253e..f835b93c2 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -5,6 +5,8 @@
   To create a cookie without a SameSite attribute, remove any calls setting same_site.
 * actix-http support for Actors messages was moved to actix-http crate and is enabled 
   with feature `actors`
+* content_length function is removed from actix-files.
+  You can set Content-Length by normally setting the response body or calling no_chunking function. 
 
 ## 2.0.0
 
diff --git a/actix-http/CHANGES.md b/actix-http/CHANGES.md
index e96b0451d..d8ab8de81 100644
--- a/actix-http/CHANGES.md
+++ b/actix-http/CHANGES.md
@@ -5,11 +5,15 @@
 ### Changed
 
 * Bump minimum supported Rust version to 1.40
+* content_length function is removed, and you can set Content-Length by calling no_chunking function [#1439]
 
 ### Fixed
 
 * Support parsing of `SameSite=None` [#1503]
 
+[#1439]: https://github.com/actix/actix-web/pull/1439
+[#1503]: https://github.com/actix/actix-web/pull/1503
+
 ## [2.0.0-alpha.3] - 2020-05-08
 
 ### Fixed