diff --git a/MIGRATION.md b/MIGRATION.md
index 000c5b46b..14bd52bbb 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -14,6 +14,9 @@
 * `actix_http_test::TestServer` moved to `actix_web::test` module. To start
   test server use `test::start()` or `test_start_with_config()` methods
 
+* `ResponseError` trait has been reafctored. `ResponseError::error_response()` renders
+  http response.
+
 
 ## 1.0.1