diff --git a/package.json b/package.json
index f3386b2..e539736 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "@angular/animations": "^4.2.4",
     "@angular/common": "^4.2.4",
     "@angular/compiler": "^4.2.4",
-    "@angular/core": "^4.2.4",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^4.2.4",
     "@angular/http": "^4.2.4",
     "@angular/platform-browser": "^4.2.4",
diff --git a/yarn.lock b/yarn.lock
index 61c7909..5b93f12 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -128,11 +128,11 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/core@^4.2.4":
-  version "4.4.6"
-  resolved "http://registry.npm.taobao.org/@angular/core/download/@angular/core-4.4.6.tgz#13031fd10dcfe438875419b38f21120958bc2354"
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
   dependencies:
-    tslib "^1.7.1"
+    tslib "^2.0.0"
 
 "@angular/forms@^4.2.4":
   version "4.4.6"
@@ -5613,6 +5613,10 @@ tslib@^1.6.0, tslib@^1.7.1, tslib@^1.8.0:
   version "1.8.1"
   resolved "http://registry.npm.taobao.org/tslib/download/tslib-1.8.1.tgz#6946af2d1d651a7b1863b531d6e5afa41aa44eac"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+
 tslint@~5.3.2:
   version "5.3.2"
   resolved "http://registry.npm.taobao.org/tslint/download/tslint-5.3.2.tgz#e56459fb095a7307f103b84052174f5e3bbef6ed"