diff --git a/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/OakLessonVideoTranscript.tsx b/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/OakLessonVideoTranscript.tsx
index ad08b445..ea1b6a9c 100644
--- a/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/OakLessonVideoTranscript.tsx
+++ b/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/OakLessonVideoTranscript.tsx
@@ -71,6 +71,7 @@ export const OakLessonVideoTranscript = ({
           isOpen={showTranscript}
           $font="body-1"
           $color="text-primary"
+          aria-live="polite"
         >
           {children}
         </OakCollapsibleContent>