diff --git a/README.md b/README.md
index 40d3dabe..be9443d6 100644
--- a/README.md
+++ b/README.md
@@ -185,7 +185,7 @@ class VoiceTest extends Component {
 | Voice.onSpeechError(event)          | Invoked when an error occurs.                          | `{ error: Description of error as string }`     | Android, iOS |
 | Voice.onSpeechResults(event)        | Invoked when SpeechRecognizer is finished recognizing. | `{ value: [..., 'Speech recognized'] }`         | Android, iOS |
 | Voice.onSpeechPartialResults(event) | Invoked when any results are computed.                 | `{ value: [..., 'Partial speech recognized'] }` | Android, iOS |
-| Voice.onSpeechVolumeChanged(event)  | Invoked when pitch that is recognized changed.         | `{ value: pitch in dB }`                        | Android      |
+| Voice.onSpeechVolumeChanged(event)  | Invoked when pitch that is recognized changed.         | `{ value: pitch in dB }`                        | Android, iOS |
 
 <h2 align="center">Permissions</h2>