diff --git a/src/Utils/process-message.ts b/src/Utils/process-message.ts
index c26ca6d..d0827a7 100644
--- a/src/Utils/process-message.ts
+++ b/src/Utils/process-message.ts
@@ -147,6 +147,14 @@ const processMessage = async(
 
 			emitParticipantsUpdate('add')
 			break
+		case WAMessageStubType.GROUP_PARTICIPANT_DEMOTE:
+			participants = message.messageStubParameters
+			emitParticipantsUpdate('demote')
+			break
+		case WAMessageStubType.GROUP_PARTICIPANT_PROMOTE:
+			participants = message.messageStubParameters
+			emitParticipantsUpdate('promote')
+			break
 		case WAMessageStubType.GROUP_CHANGE_ANNOUNCE:
 			const announceValue = message.messageStubParameters[0]
 			emitGroupUpdate({ announce: announceValue === 'true' || announceValue === 'on' })