diff --git a/webhook.go b/webhook.go
index 9209b70..6d8e2fe 100644
--- a/webhook.go
+++ b/webhook.go
@@ -38,6 +38,9 @@ type WebhookParams struct {
 	// Only MessageFlagsSuppressEmbeds and MessageFlagsEphemeral can be set.
 	// MessageFlagsEphemeral can only be set when using Followup Message Create endpoint.
 	Flags MessageFlags `json:"flags,omitempty"`
+	// Name of the thread to create.
+	// NOTE: can only be set if the webhook channel is a forum.
+	ThreadName string `json:"thread_name,omitempty"`
 }
 
 // WebhookEdit stores data for editing of a webhook message.