diff --git a/web/src/signalr-web/SignalRMiddleware/EventApp/package-lock.json b/web/src/signalr-web/SignalRMiddleware/EventApp/package-lock.json
index 04c9e4f..a58bca3 100644
--- a/web/src/signalr-web/SignalRMiddleware/EventApp/package-lock.json
+++ b/web/src/signalr-web/SignalRMiddleware/EventApp/package-lock.json
@@ -180,11 +180,18 @@
       }
     },
     "@angular/core": {
-      "version": "5.2.9",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.9.tgz",
-      "integrity": "sha512-cvHBJGtasrIoARvbLFyHaOsiWKVwMNrrSTZLwrlyHP8oYzkDrE0qKGer6QCqyKt+51hF53cgWEffGzM/u/0wYg==",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "requires": {
-        "tslib": "^1.7.1"
+        "tslib": "^2.0.0"
+      },
+      "dependencies": {
+        "tslib": {
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+          "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+        }
       }
     },
     "@angular/forms": {
diff --git a/web/src/signalr-web/SignalRMiddleware/EventApp/package.json b/web/src/signalr-web/SignalRMiddleware/EventApp/package.json
index 7776aa7..4832d4b 100644
--- a/web/src/signalr-web/SignalRMiddleware/EventApp/package.json
+++ b/web/src/signalr-web/SignalRMiddleware/EventApp/package.json
@@ -22,7 +22,7 @@
     "@angular/cdk": "^5.2.4",
     "@angular/common": "^5.2.0",
     "@angular/compiler": "^5.2.0",
-    "@angular/core": "^5.2.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.2.0",
     "@angular/http": "^5.2.0",
     "@angular/material": "^5.2.4",