diff --git a/packages/core-components/api-report.md b/packages/core-components/api-report.md
index d40179dc62..0ebf96edbc 100644
--- a/packages/core-components/api-report.md
+++ b/packages/core-components/api-report.md
@@ -384,6 +384,7 @@ export type ErrorPanelClassKey = 'text' | 'divider';
 export type ErrorPanelProps = {
   error: Error;
   defaultExpanded?: boolean;
+  titleFormat?: string;
   title?: string;
 };