Update URLs
diff --git a/include/opus_multistream.h b/include/opus_multistream.h
index 47e0390..3622e00 100644
--- a/include/opus_multistream.h
+++ b/include/opus_multistream.h
@@ -110,10 +110,10 @@
* packets produced by the encoder. Some basic information, such as packet
* duration, can be computed without any special negotiation.
*
- * The format for multistream Opus packets is defined in the
- * <a href="https://tools.ietf.org/html/draft-ietf-codec-oggopus">Ogg
- * encapsulation specification</a> and is based on the self-delimited Opus
- * framing described in Appendix B of <a href="https://tools.ietf.org/html/rfc6716">RFC 6716</a>.
+ * The format for multistream Opus packets is defined in
+ * <a href="https://tools.ietf.org/html/rfc7845">RFC 7845</a>
+ * and is based on the self-delimited Opus framing described in Appendix B of
+ * <a href="https://tools.ietf.org/html/rfc6716">RFC 6716</a>.
* Normal Opus packets are just a degenerate case of multistream Opus packets,
* and can be encoded or decoded with the multistream API by setting
* <code>streams</code> to <code>1</code> when initializing the encoder or