diff --git a/packages/theme/api-report.md b/packages/theme/api-report.md
index 72d7887214..30dcb7b040 100644
--- a/packages/theme/api-report.md
+++ b/packages/theme/api-report.md
@@ -64,6 +64,7 @@ export type BackstagePaletteAdditions = {
     error: string;
     text: string;
     link: string;
+    warning: string;
   };
 };