diff --git a/docs/4.0/migration.md b/docs/4.0/migration.md
index f82bb4aef5228f1b0227ff3da261a481b3f1122f..b95c4d35ee030d3627c31d1ba8f072a18e915658 100644
--- a/docs/4.0/migration.md
+++ b/docs/4.0/migration.md
@@ -201,11 +201,7 @@ Dropped entirely for the new card component.
 - `.panel-title` to `.card-title`. Depending on the desired look, you may also want to use [heading elements or classes]({{ site.baseurl }}/docs/{{ site.docs_version }}/content/typography/#headings) (e.g. `<h3>`, `.h3`) or bold elements or classes (e.g. `<strong>`, `<b>`, [`.font-weight-bold`]({{ site.baseurl }}/docs/{{ site.docs_version }}/utilities/typography/#font-weight-and-italics)). Note that `.card-title`, while similarly named, produces a different look than `.panel-title`.
 - `.panel-body` to `.card-body`
 - `.panel-footer` to `.card-footer`
-- `.panel-primary` to `.card-primary` and `.card-dark` (or use `.bg-primary` on `.card-header`)
-- `.panel-success` to `.card-success` and `.card-dark` (or use `.bg-success` on `.card-header`)
-- `.panel-info` to `.card-info` and `.card-dark` (or use `.bg-info` on `.card-header`)
-- `.panel-warning` to `.card-warning` and `.card-dark` (or use `.bg-warning` on `.card-header`)
-- `.panel-danger` to `.card-danger` and `.card-dark` (or use `.bg-danger` on `.card-header`)
+- `.panel-primary`, `.panel-success`, `.panel-info`, `.panel-warning`, and `.panel-danger` have been dropped for `.bg-`, `.text-`, and `.border` utilities generated from our `$theme-colors` Sass map.
 
 ### Carousel