diff --git a/Demos/GroupDocs.Annotation.AspNetWebForms/client/package-lock.json b/Demos/GroupDocs.Annotation.AspNetWebForms/client/package-lock.json
index 0077e04..200a1a2 100644
--- a/Demos/GroupDocs.Annotation.AspNetWebForms/client/package-lock.json
+++ b/Demos/GroupDocs.Annotation.AspNetWebForms/client/package-lock.json
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         "unicode-property-aliases-ecmascript": "^2.0.0"
@@ -14531,12 +14576,14 @@
     "unicode-match-property-value-ecmascript": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-2.0.0.tgz",
-      "integrity": "sha512-7Yhkc0Ye+t4PNYzOGKedDhXbYIBe1XEQYQxOPyhcXNMJ0WCABqqj6ckydd6pWRZTHV4GuCPKdBAUiMc60tsKVw=="
+      "integrity": "sha512-7Yhkc0Ye+t4PNYzOGKedDhXbYIBe1XEQYQxOPyhcXNMJ0WCABqqj6ckydd6pWRZTHV4GuCPKdBAUiMc60tsKVw==",
+      "optional": true
     },
     "unicode-property-aliases-ecmascript": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-2.0.0.tgz",
-      "integrity": "sha512-5Zfuy9q/DFr4tfO7ZPeVXb1aPoeQSdeFMLpYuFebehDAhbuevLs5yxSZmIFN1tP5F9Wl4IpJrYojg85/zgyZHQ=="
+      "integrity": "sha512-5Zfuy9q/DFr4tfO7ZPeVXb1aPoeQSdeFMLpYuFebehDAhbuevLs5yxSZmIFN1tP5F9Wl4IpJrYojg85/zgyZHQ==",
+      "optional": true
     },
     "union-value": {
       "version": "1.0.1",
@@ -14916,6 +14963,7 @@
           "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
           "integrity": "sha512-zCnTtlxNoAiDc3gqY2aYAWFx7XWWiasuF2K8Me5WbN8otHKTUKBwjPtNpRs/rbUZm7KxWAaNj7P1a/p52GbVug==",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-extendable": "^0.1.0"
           }
@@ -14978,6 +15026,7 @@
           "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
           "integrity": "sha512-4cboCqIpliH+mAvFNegjZQ4kgKc3ZUhQVr3HvWbSh5q3WH2v82ct+T2Y1hdU5Gdtorx/cLifQjqCbL7bpznLTg==",
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2"
           }
@@ -14987,6 +15036,7 @@
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
           "integrity": "sha512-NOW9QQXMoZGg/oqnVNoNTTIFEIid1627WCffUBJEdMxYApq7mNE7CpzucIPc+ZQg25Phej7IJSmX3hO+oblOtQ==",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
diff --git a/Demos/GroupDocs.Annotation.AspNetWebForms/client/package.json b/Demos/GroupDocs.Annotation.AspNetWebForms/client/package.json
index 7ee1e76..85b46c9 100644
--- a/Demos/GroupDocs.Annotation.AspNetWebForms/client/package.json
+++ b/Demos/GroupDocs.Annotation.AspNetWebForms/client/package.json
@@ -31,7 +31,7 @@
     "@angular/animations": "^8.0.0",
     "@angular/common": "^8.0.0",
     "@angular/compiler": "^8.0.0",
-    "@angular/core": "^8.0.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^8.0.0",
     "@angular/platform-browser": "^8.0.0",
     "@angular/platform-browser-dynamic": "^8.0.0",