diff --git a/model.go b/model.go
index 0e6cbba..41350b7 100644
--- a/model.go
+++ b/model.go
@@ -16,6 +16,7 @@ type PushRequest struct {
 	Users    []string `json:"users"`
 	Label    string   `json:"label,omitempty"`
 	Category string   `json:"category,omitempty"`
+	Sound    string   `json:"sound,omitempty"`
 }
 
 // PushResponse ...
@@ -33,6 +34,7 @@ type pushRequest struct {
 	Topic    string   `json:"topic"`
 	Label    string   `json:"label"`
 	Category string   `json:"category"`
+	Sound    string   `json:"sound,omitempty"`
 }
 
 // Query ...
diff --git a/notification.go b/notification.go
index 8722bdb..cc38cb0 100644
--- a/notification.go
+++ b/notification.go
@@ -61,6 +61,7 @@ func (c *Client) PushToUsers(payload PushRequest) (requestID string, err error)
 		Users:    payload.Users,
 		Label:    payload.Label,
 		Category: payload.Category,
+		Sound:    payload.Sound,
 	}
 	msg, err := c.natsServer.Request(SubjectPushNotification, toBytes(p))
 	if err != nil {