diff --git a/package-lock.json b/package-lock.json
index b86a63f..d96f3d2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -838,9 +838,19 @@
       }
     },
     "@angular/core": {
-      "version": "9.0.2",
-      "resolved": "https://registry.npm.taobao.org/@angular/core/download/@angular/core-9.0.2.tgz?cache=0&sync_timestamp=1582145612579&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2F%40angular%2Fcore%2Fdownload%2F%40angular%2Fcore-9.0.2.tgz",
-      "integrity": "sha1-JQCTtqTTE34sww5z5s7pGfE4YWU="
+      "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": "9.0.2",
diff --git a/package.json b/package.json
index c9a1b23..099e16a 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@angular/cdk": "^7.3.7",
     "@angular/common": "^9.0.2",
     "@angular/compiler": "^9.0.2",
-    "@angular/core": "^9.0.2",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^9.0.2",
     "@angular/http": "^7.2.12",
     "@angular/material": "^7.3.7",