diff --git a/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package-lock.json b/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package-lock.json
index 3f0f90c..0a34ac2 100644
--- a/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package-lock.json
+++ b/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package-lock.json
@@ -15,9 +15,9 @@
       "integrity": "sha512-36+AdBzCL+y6qjw5Tx7HgzeGCzC81MDDgaUP8ld2zhx58HdqXGoBd+tHdrBMiyjGQs0Hxs/MLZTu/eHNJJuWPw=="
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "signalr": {
       "version": "2.4.1",
diff --git a/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package.json b/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package.json
index f525672..5b1269b 100644
--- a/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package.json
+++ b/DotChat/Demo/DotChat.Demo.SignalR/wwwroot/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "bootstrap": "^4.4.1",
     "jquery": "^3.4.1",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "signalr": "^2.4.1"
   }
 }