diff --git a/MailManager.Web/package-lock.json b/MailManager.Web/package-lock.json
index 55b1b12..b8d7b94 100644
--- a/MailManager.Web/package-lock.json
+++ b/MailManager.Web/package-lock.json
@@ -317,9 +317,9 @@
       "dev": true
     },
     "bootstrap": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.1.3.tgz",
-      "integrity": "sha512-rDFIzgXcof0jDyjNosjv4Sno77X4KuPeFxG2XZZv1/Kc8DRVGVADdoQyyOVDwPqL36DDmtCQbrpMCqvpPLJQ0w==",
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-4.3.1.tgz",
+      "integrity": "sha512-rXqOmH1VilAt2DyPzluTi2blhk17bO7ef+zLLPlWvG494pDxcM234pJ8wTc/6R40UWizAIIMgxjvxZg5kmsbag==",
       "dev": true
     },
     "brace-expansion": {
diff --git a/MailManager.Web/package.json b/MailManager.Web/package.json
index 9a7e2de..3c4ea06 100644
--- a/MailManager.Web/package.json
+++ b/MailManager.Web/package.json
@@ -3,7 +3,7 @@
   "name": "asp.net",
   "private": true,
   "devDependencies": {
-    "bootstrap": "^4.1.3",
+    "bootstrap": "^4.3.1",
     "font-awesome": "4.7.0",
     "gulp": "^4.0.0",
     "gulp-concat": "^2.6.1",