diff --git a/db/booker.js b/db/booker.js
index 99a11d1..4fc45bf 100644
--- a/db/booker.js
+++ b/db/booker.js
@@ -1,7 +1,12 @@
+import { v4 as uuidv4 } from 'uuid'
 import * as mongoose from 'mongoose'
 
 const BookerSchema = new mongoose.Schema(
   {
+    _id: {
+      type: String,
+      default: uuidv4,
+    },
     name: { type: String, required: true },
     email: { type: String, required: true, unique: true, minlength: 5 },
     street: { type: String, required: true },
diff --git a/db/booking.js b/db/booking.js
index da686d2..83110f6 100644
--- a/db/booking.js
+++ b/db/booking.js
@@ -1,9 +1,14 @@
+import { v4 as uuidv4 } from 'uuid'
 import * as mongoose from 'mongoose'
 
 import { getDays, dateFormatBackend } from '../helpers/date'
 
 const BookingSchema = new mongoose.Schema(
   {
+    _id: {
+      type: String,
+      default: uuidv4,
+    },
     booker: {
       type: mongoose.Schema.Types.ObjectId,
       ref: 'Booker',
@@ -42,5 +47,7 @@ BookingSchema.virtual('days').get(function () {
   return getDays({ startDate: this.startDate, endDate: this.endDate })
 })
 
+BookingSchema.virtual('hash').get(function () {})
+
 export default mongoose.models.Booking ||
   mongoose.model('Booking', BookingSchema)
diff --git a/package-lock.json b/package-lock.json
index d512921..4fb605c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11541,9 +11541,7 @@
     "uuid": {
       "version": "8.3.0",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.0.tgz",
-      "integrity": "sha512-fX6Z5o4m6XsXBdli9g7DtWgAx+osMsRRZFKma1mIUsLCz6vRvv+pz5VNbyu9UEDzpMWulZfvpgb/cmDXVulYFQ==",
-      "dev": true,
-      "optional": true
+      "integrity": "sha512-fX6Z5o4m6XsXBdli9g7DtWgAx+osMsRRZFKma1mIUsLCz6vRvv+pz5VNbyu9UEDzpMWulZfvpgb/cmDXVulYFQ=="
     },
     "v8-compile-cache": {
       "version": "2.1.1",
diff --git a/package.json b/package.json
index 4013946..7b080d2 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,8 @@
     "react-day-picker": "^7.4.8",
     "react-dom": "16.13.1",
     "rebass": "^4.0.7",
-    "swr": "^0.3.0"
+    "swr": "^0.3.0",
+    "uuid": "^8.3.0"
   },
   "devDependencies": {
     "babel-jest": "^26.3.0",