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>
diff --git a/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/__snapshots__/OakLessonVideoTranscript.test.tsx.snap b/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/__snapshots__/OakLessonVideoTranscript.test.tsx.snap
index e329db05..27e4b56f 100644
--- a/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/__snapshots__/OakLessonVideoTranscript.test.tsx.snap
+++ b/src/components/organisms/pupil/lesson/OakLessonVideoTranscript/__snapshots__/OakLessonVideoTranscript.test.tsx.snap
@@ -316,6 +316,7 @@ exports[`OakLessonVideoTranscript matches snapshot 1`] = `
     id="transcript-element"
   >
     <div
+      aria-live="polite"
       className="c1 c2"
     >
       <div