diff --git a/.changeset/dry-spies-cover.md b/.changeset/dry-spies-cover.md
index 7006dee5c4..aae683faaf 100644
--- a/.changeset/dry-spies-cover.md
+++ b/.changeset/dry-spies-cover.md
@@ -3,4 +3,6 @@
 '@backstage/theme': patch
 ---
 
-Will Add warning variant to `DismissableBanner` component.
+Added a warning variant to `DismissableBanner` component. If you are using a
+custom theme, you will need to add the optional `palette.banner.warning` color,
+otherwise this variant will fall back to the `palette.banner.error` color.