diff --git a/lights.go b/lights.go
index 21a9d48..7498fed 100644
--- a/lights.go
+++ b/lights.go
@@ -40,19 +40,19 @@ type (
 	}
 
 	Light struct {
-		Id              string    `json:"id"`
-		UUID            string    `json:"uuid"`
-		Label           string    `json:"label"`
-		Connected       bool      `json:"connected"`
-		Power           string    `json:"power"`
-		Color           HSBKColor `json:"color"`
-		Brightness      float64   `json:"brightness"`
-		Effect          string    `json:"effect"`
-		Group           Selector  `json:"group"`
-		Location        Selector  `json:"location"`
-		Product         Product   `json:"product"`
-		LastSeen        time.Time `json:"last_seen"`
-		SecondsLastSeen float64   `json:"seconds_last_seen"`
+		Id              string     `json:"id"`
+		UUID            string     `json:"uuid"`
+		Label           string     `json:"label"`
+		Connected       bool       `json:"connected"`
+		Power           string     `json:"power"`
+		Color           HSBKColor  `json:"color"`
+		Brightness      float64    `json:"brightness"`
+		Effect          string     `json:"effect"`
+		Group           Selector   `json:"group"`
+		Location        Selector   `json:"location"`
+		Product         Product    `json:"product"`
+		LastSeen        *time.Time `json:"last_seen,omitempty"`
+		SecondsLastSeen float64    `json:"seconds_last_seen"`
 	}
 
 	State struct {