diff --git a/proto/audit/v1/event_entity.proto b/proto/audit/v1/event_entity.proto
index 060c8ca..d11c08e 100644
--- a/proto/audit/v1/event_entity.proto
+++ b/proto/audit/v1/event_entity.proto
@@ -23,6 +23,7 @@ enum AppProtocol {
   APP_PROTOCOL_HTTP = 2;
   APP_PROTOCOL_HTTP_PROXY = 3;
   APP_PROTOCOL_PPROF = 4;
+  APP_PROTOCOL_DNS_OVER_HTTPS = 5;
 }
 
 enum TLSVersion {