diff --git a/smart-contracts/assembly/contracts/website-deployer/__tests__/websiteDeployer.spec.ts b/smart-contracts/assembly/contracts/website-deployer/__tests__/websiteDeployer.spec.ts
index 8bc07e6..b49851c 100644
--- a/smart-contracts/assembly/contracts/website-deployer/__tests__/websiteDeployer.spec.ts
+++ b/smart-contracts/assembly/contracts/website-deployer/__tests__/websiteDeployer.spec.ts
@@ -1,4 +1,9 @@
-import { Args, i32ToBytes, unwrapStaticArray } from '@massalabs/as-types';
+import {
+  Args,
+  i32ToBytes,
+  u64ToBytes,
+  unwrapStaticArray,
+} from '@massalabs/as-types';
 import {
   Storage,
   resetStorage,
@@ -6,6 +11,7 @@ import {
 } from '@massalabs/massa-as-sdk';
 import {
   NB_CHUNKS_KEY,
+  NONCE_KEY,
   appendBytesToWebsite,
   constructor,
   deleteWebsite,
@@ -49,6 +55,7 @@ describe('website deployer tests', () => {
     }
 
     expect(Storage.get(NB_CHUNKS_KEY)).toStrictEqual(i32ToBytes(nbChunks));
+    expect(Storage.get(NONCE_KEY)).toStrictEqual(u64ToBytes(0));
   });
 
   test('edit a website (upload missed chunks)', () => {
@@ -63,6 +70,8 @@ describe('website deployer tests', () => {
         unwrapStaticArray(data),
       );
     }
+
+    expect(Storage.get(NONCE_KEY)).toStrictEqual(u64ToBytes(0));
   });
 
   test('delete website', () => {
@@ -72,6 +81,8 @@ describe('website deployer tests', () => {
     for (let chunkId: i32 = 0; chunkId < nbChunks; chunkId++) {
       expect(Storage.has(i32ToBytes(chunkId))).toBeFalsy();
     }
+
+    expect(Storage.get(NONCE_KEY)).toStrictEqual(u64ToBytes(1));
   });
 
   test('update website', () => {
@@ -89,5 +100,6 @@ describe('website deployer tests', () => {
     }
 
     expect(Storage.get(NB_CHUNKS_KEY)).toStrictEqual(i32ToBytes(nbChunks));
+    expect(Storage.get(NONCE_KEY)).toStrictEqual(u64ToBytes(2));
   });
 });
diff --git a/smart-contracts/assembly/contracts/website-deployer/websiteStorer.ts b/smart-contracts/assembly/contracts/website-deployer/websiteStorer.ts
index 4f20507..7b86c00 100644
--- a/smart-contracts/assembly/contracts/website-deployer/websiteStorer.ts
+++ b/smart-contracts/assembly/contracts/website-deployer/websiteStorer.ts
@@ -10,14 +10,17 @@ import { Storage, Context, generateEvent } from '@massalabs/massa-as-sdk';
 import {
   Args,
   bytesToI32,
+  bytesToU64,
   i32ToBytes,
   stringToBytes,
+  u64ToBytes,
 } from '@massalabs/as-types';
 import { onlyOwner } from '../utils';
 import { _setOwner } from '../utils/ownership-internal';
 import { isDeployingContract } from '@massalabs/massa-as-sdk/assembly/std/context';
 
 export const NB_CHUNKS_KEY = stringToBytes('NB_CHUNKS');
+export const NONCE_KEY = stringToBytes('NONCE');
 
 /**
  * Constructor function that initializes the contract owner.
@@ -56,6 +59,14 @@ export function appendBytesToWebsite(binaryArgs: StaticArray<u8>): void {
     Storage.set(NB_CHUNKS_KEY, i32ToBytes(chunkNb + 1));
   }
 
+  // if we are uploading a new website version, increment the nonce
+  if (!totalChunks) {
+    let nonce: u64 = Storage.has(NONCE_KEY)
+      ? bytesToU64(Storage.get(NONCE_KEY)) + 1
+      : 0;
+    Storage.set(NONCE_KEY, u64ToBytes(nonce));
+  }
+
   generateEvent(
     `Website chunk ${chunkNb} deployed to ${Context.callee().toString()}`,
   );
@@ -84,5 +95,9 @@ export function deleteWebsite(_: StaticArray<u8>): void {
   }
   Storage.del(NB_CHUNKS_KEY);
 
+  // increment nonce
+  let nonce: u64 = bytesToU64(Storage.get(NONCE_KEY));
+  Storage.set(NONCE_KEY, u64ToBytes(++nonce));
+
   generateEvent(`Website ${Context.callee().toString()} deleted successfully`);
 }