diff --git a/src/lib/Models/vehicles.model.js b/src/lib/Models/vehicles.model.js
index 70b1ce7..d719a34 100644
--- a/src/lib/Models/vehicles.model.js
+++ b/src/lib/Models/vehicles.model.js
@@ -51,6 +51,7 @@ const schema = new Schema({
     last_location_lng: { type: String },
     last_location_geo: { type: pointSchema },
     last_location_time: { type: Date },
+    createdAt: { type : Date, required : true, default : () => { return Date.now(); } }
 });
 
 module.exports = mongoose.model( "vehicles", schema );