diff --git a/app/loader.js b/app/loader.js
index f2710afe..fee44645 100644
--- a/app/loader.js
+++ b/app/loader.js
@@ -3,7 +3,7 @@
 
     var isJSRequested = false;
     var rejects = [];
-    var version = 'v4.0.1';
+    var version = 'v4.0.2';
     var baseURL = '__BASE_URL__';
     var query = __QUERY__;
     var isLazy = query.lazy === 'true';
diff --git a/config.main.json b/config.main.json
index 2199940a..dea1fa53 100644
--- a/config.main.json
+++ b/config.main.json
@@ -32,6 +32,7 @@
     "secureProtocol": "https:",
 
     "baseUrl": "//maps.api.2gis.ru/2.0",
+    "key": "",
 
     "tileServer": "//tile{s}.maps.2gis.com/v2/tiles?x={x}&y={y}&z={z}&v=1&ts=online_sd&key={key}",
     "retinaTileServer": "//tile{s}.maps.2gis.com/v2/tiles?x={x}&y={y}&z={z}&v=1&ts=online_hd&key={key}",
diff --git a/package-lock.json b/package-lock.json
index da62391d..4f7f26e4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
     "name": "2gis-maps",
-    "version": "4.0.1",
+    "version": "4.0.2",
     "lockfileVersion": 1,
     "requires": true,
     "dependencies": {
diff --git a/package.json b/package.json
index d32fee29..03d27fd5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "2gis-maps",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "Interactive 2GIS maps API, based on Leaflet",
   "license": "SEE LICENSE IN FILE",
   "keywords": [
diff --git a/src/DGAttribution/src/DGAttribution.js b/src/DGAttribution/src/DGAttribution.js
index 854cb5bd..3e6ae591 100644
--- a/src/DGAttribution/src/DGAttribution.js
+++ b/src/DGAttribution/src/DGAttribution.js
@@ -111,7 +111,7 @@ DG.Control.Attribution.include({
             map._copyright = true;
             this._first = true;
         }
-        this._key = map.options.key;
+        this._key = map.options.key || DG.config.key;
         this._logotype = map.options.logotype;
         this._open2gis = this._getLink('open_link')
 
diff --git a/src/DGCustomization/src/DGMap.BaseLayer.js b/src/DGCustomization/src/DGMap.BaseLayer.js
index e33fc50a..c8ea7260 100644
--- a/src/DGCustomization/src/DGMap.BaseLayer.js
+++ b/src/DGCustomization/src/DGMap.BaseLayer.js
@@ -15,7 +15,7 @@ DG.Map.addInitHook(function() {
         }
     });
 
-    var apiKey = this.options.key;
+    var apiKey = this.options.key || DG.config.key;
 
     this.isErrorWasShown = false;
     function handleTileError() {