diff --git a/google/cloud/speech/v1p1beta1/cloud_speech.proto b/google/cloud/speech/v1p1beta1/cloud_speech.proto
index 39fc01bf..da9e0b2b 100644
--- a/google/cloud/speech/v1p1beta1/cloud_speech.proto
+++ b/google/cloud/speech/v1p1beta1/cloud_speech.proto
@@ -242,6 +242,15 @@ message RecognitionConfig {
   // `false`.
   bool enable_word_time_offsets = 8;
 
+  // *Optional* If 'true', adds punctuation to recognition result hypotheses.
+  // This feature is only available in select languages. Setting this for
+  // requests in other languages has no effect at all.
+  // The default 'false' value does not add punctuation to result hypotheses.
+  // NOTE: "This is currently offered as an experimental service, complimentary
+  // to all users. In the future this may be exclusively available as a
+  // premium feature."
+  bool enable_automatic_punctuation = 11;
+
   // *Optional* Metadata regarding this request.
   RecognitionMetadata metadata = 9;