diff --git a/.changeset/purple-donuts-smash.md b/.changeset/purple-donuts-smash.md
new file mode 100644
index 000000000..3fd6ec71b
--- /dev/null
+++ b/.changeset/purple-donuts-smash.md
@@ -0,0 +1,5 @@
+---
+"github.com/livekit/protocol": patch
+---
+
+feat(livekit): add sip invite message to sip participant attributes
diff --git a/livekit/attrs.go b/livekit/attrs.go
index 2424f27c6..26085aa35 100644
--- a/livekit/attrs.go
+++ b/livekit/attrs.go
@@ -20,4 +20,6 @@ const (
 	//
 	// SIP participant is ready when it reaches "active" status.
 	AttrSIPCallStatus = AttrSIPPrefix + "callStatus"
+	// AttrSIPInviteMessage attribute contains LiveKit SIP Invite Message
+	AttrSIPInviteMessage = AttrSIPPrefix + "inviteMessage"
 )