diff --git a/lib/dns/include/dns/dnstap.h b/lib/dns/include/dns/dnstap.h
index aa80cbba78..3f83e96d22 100644
--- a/lib/dns/include/dns/dnstap.h
+++ b/lib/dns/include/dns/dnstap.h
@@ -55,6 +55,8 @@ struct fstrm_iothr_options;
  * RESOLVER RESPONSE: RR
  * FORWARDER QUERY: FQ
  * FORWARDER RESPONSE: FR
+ * UPDATE QUERY: UQ
+ * UPDATE RESPONSE: UR
  */
 
 #define DNS_DTTYPE_SQ 0x0001