diff --git a/package-lock.json b/package-lock.json
index 384afad..452e8bf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
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@@ -10986,6 +11035,14 @@
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+          "dev": true
+        },
+        "wordwrap": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+          "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+          "dev": true
+        }
+      }
+    },
+    "typedoc-default-themes": {
+      "version": "0.10.2",
+      "resolved": "https://registry.npmjs.org/typedoc-default-themes/-/typedoc-default-themes-0.10.2.tgz",
+      "integrity": "sha512-zo09yRj+xwLFE3hyhJeVHWRSPuKEIAsFK5r2u47KL/HBKqpwdUSanoaz5L34IKiSATFrjG5ywmIu98hPVMfxZg==",
+      "dev": true,
+      "requires": {
+        "lunr": "^2.3.8"
+      }
+    },
     "typescript": {
       "version": "3.5.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
@@ -28283,21 +28550,6 @@
       "integrity": "sha1-/FZaPMy/93MMd19WQflVV5FDnyE=",
       "dev": true
     },
-    "urljoin": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/urljoin/-/urljoin-0.1.5.tgz",
-      "integrity": "sha1-sl0sYRLFWsnVAJakmg8ft/T1OSE=",
-      "requires": {
-        "extend": "~2.0.0"
-      },
-      "dependencies": {
-        "extend": {
-          "version": "2.0.2",
-          "resolved": "https://registry.npmjs.org/extend/-/extend-2.0.2.tgz",
-          "integrity": "sha512-AgFD4VU+lVLP6vjnlNfF7OeInLTyeyckCNPEsuxz1vi786UuK/nk6ynPuhn/h+Ju9++TQyr5EpLRI14fc1QtTQ=="
-        }
-      }
-    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
diff --git a/package.json b/package.json
index d6b58f4..e138bfe 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "@angular/common": "^8.2.4",
     "@angular/compiler": "^8.2.4",
     "@angular/compiler-cli": "^8.2.4",
-    "@angular/core": "^8.2.4",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^8.2.4",
     "@angular/platform-browser": "^8.2.4",
     "@angular/platform-browser-dynamic": "^8.2.4",
diff --git a/yarn.lock b/yarn.lock
index d4bdebf..df5953e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -198,12 +198,12 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/core@^8.2.4":
-  version "8.2.14"
-  resolved "https://registry.npm.taobao.org/@angular/core/download/@angular/core-8.2.14.tgz?cache=0&sync_timestamp=1574897466018&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40angular%2Fcore%2Fdownload%2F%40angular%2Fcore-8.2.14.tgz#35566f5b19480369229477e7e0e0fde740bd5204"
-  integrity sha1-NVZvWxlIA2kilHfn4OD950C9UgQ=
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
+  integrity sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==
   dependencies:
-    tslib "^1.9.0"
+    tslib "^2.0.0"
 
 "@angular/forms@^8.2.4":
   version "8.2.14"
@@ -16113,6 +16113,11 @@ tslib@1.10.0, tslib@^1.10.0, tslib@^1.7.1, tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.npm.taobao.org/tslib/download/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
   integrity sha1-w8GflZc/sKYpc/sJ2Q2WHuQ+XIo=
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+  integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==
+
 tslint@5.4.3:
   version "5.4.3"
   resolved "https://registry.npm.taobao.org/tslint/download/tslint-5.4.3.tgz?cache=0&sync_timestamp=1572976919659&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Ftslint%2Fdownload%2Ftslint-5.4.3.tgz#761c8402b80e347b7733a04390a757b253580467"