diff --git a/interfaces/webrtc-stats.idl b/interfaces/webrtc-stats.idl
index 4df720a0fc1833..b2bf38e9fd45f8 100644
--- a/interfaces/webrtc-stats.idl
+++ b/interfaces/webrtc-stats.idl
@@ -230,8 +230,10 @@ dictionary RTCTransportStats : RTCStats {
              DOMString selectedCandidatePairId;
              DOMString localCertificateId;
              DOMString remoteCertificateId;
+             DOMString tlsVersion;
              DOMString dtlsCipher;
              DOMString srtpCipher;
+             DOMString tlsGroup;
 };
 
 dictionary RTCIceCandidateStats : RTCStats {