diff --git a/js/app.js b/js/app.js
index 84603f1..d1bd3a4 100644
--- a/js/app.js
+++ b/js/app.js
@@ -137,11 +137,14 @@ let game = new Vue({
     },
     created() {
         this.storageNames = {
+            lastVersion: 'lastVersion',
             resources: 'resources' + this.version,
             buildings: 'buildings' + this.version,
             currentQuest: 'currentQuest' + this.version
         }
 
+        this.checkVersion();
+
         this.checkBuildings();
         this.loadResourcesFromStorage();
         this.currentQuest = JSON.parse(localStorage.getItem(this.storageNames.currentQuest));
@@ -150,6 +153,16 @@ let game = new Vue({
         this.reloadBuildings();
     },
     methods: {
+        checkVersion() {
+            let lastVersion = localStorage.getItem(this.storageNames.lastVersion);
+
+            if (lastVersion && lastVersion < this.version) {
+                this.sendSystemNotification('Your beta-progress has been resetted due to a new version of the game, we\'re very sorry about that.')
+            }
+
+            localStorage.setItem(this.storageNames.lastVersion, this.version);
+        },
+
         checkBuildings() {
             let savedBuildings = JSON.parse(localStorage.getItem(this.storageNames.buildings));
 
@@ -540,6 +553,15 @@ let game = new Vue({
             });
         },
 
+        sendSystemNotification(message) {
+            iziToast.show({
+                color: 'red',
+                message: message,
+                position: 'topCenter',
+                timeout: 7000,
+            });
+        },
+
         sendWarning(message) {
             iziToast.show({
                 color: 'red',