diff --git a/docs/migration.md b/docs/migration.md
index 197a3a7b2c..1fd28016a3 100644
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -80,7 +80,8 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 - Renamed `.table-condensed` to `.table-sm` for consistency.
 - Added a new `.table-inverse` option.
 - Added a new `.table-reflow` option.
-- Added table header modifiers: `.thead-default` and `.thead-inverse`
+- Added table header modifiers: `.thead-default` and `.thead-inverse`.
+- Renamed contextual classes to have a `.table-`-prefix. Hence `.active`, `.success`, `.warning`, `.danger` and `.table-info` to `.table-active`, `.table-success`, `.table-warning`, `.table-danger` and `.table-info`.
 
 ### Forms