diff --git a/src/entity/gps_device_log.ts b/src/entity/gps_device_log.ts
index eb62389..2f24831 100644
--- a/src/entity/gps_device_log.ts
+++ b/src/entity/gps_device_log.ts
@@ -11,6 +11,11 @@ export class GpsDeviceLog {
 	@JoinColumn({ name: "deviceId" })
 	device: GpsDevice;
 
+	@Column({
+		nullable: true,
+	})
+	activity_at: Date;
+
 	@Column({
 		nullable: false,
 		type: "text",