diff --git a/Chapter_01/HealthCheck/ClientApp/package-lock.json b/Chapter_01/HealthCheck/ClientApp/package-lock.json
index 7665047..b86c407 100644
--- a/Chapter_01/HealthCheck/ClientApp/package-lock.json
+++ b/Chapter_01/HealthCheck/ClientApp/package-lock.json
@@ -601,9 +601,19 @@
       }
     },
     "@angular/core": {
-      "version": "9.0.0",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-9.0.0.tgz",
-      "integrity": "sha512-6Pxgsrf0qF9iFFqmIcWmjJGkkCaCm6V5QNnxMy2KloO3SDq6QuMVRbN9RtC8Urmo25LP+eZ6ZgYqFYpdD8Hd9w=="
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
+      "requires": {
+        "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": {
       "version": "9.0.0",
@@ -8289,9 +8299,9 @@
       }
     },
     "jquery": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.4.1.tgz",
-      "integrity": "sha512-36+AdBzCL+y6qjw5Tx7HgzeGCzC81MDDgaUP8ld2zhx58HdqXGoBd+tHdrBMiyjGQs0Hxs/MLZTu/eHNJJuWPw=="
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.5.1.tgz",
+      "integrity": "sha512-XwIBPqcMn57FxfT+Go5pzySnm4KWkT1Tv7gjrpT1srtf8Weynl6R273VJ5GjkRb51IzMp5nbaPjJXMWeju2MKg=="
     },
     "js-base64": {
       "version": "2.5.1",
diff --git a/Chapter_01/HealthCheck/ClientApp/package.json b/Chapter_01/HealthCheck/ClientApp/package.json
index ef3f142..e8d341d 100644
--- a/Chapter_01/HealthCheck/ClientApp/package.json
+++ b/Chapter_01/HealthCheck/ClientApp/package.json
@@ -15,7 +15,7 @@
     "@angular/animations": "9.0.0",
     "@angular/common": "9.0.0",
     "@angular/compiler": "9.0.0",
-    "@angular/core": "9.0.0",
+    "@angular/core": "11.0.5",
     "@angular/forms": "9.0.0",
     "@angular/platform-browser": "9.0.0",
     "@angular/platform-browser-dynamic": "9.0.0",