diff --git a/demo/package-lock.json b/demo/package-lock.json
index 028a3bc..526c06c 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -32,11 +32,18 @@
       }
     },
     "@angular/core": {
-      "version": "4.4.6",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.4.6.tgz",
-      "integrity": "sha1-EwMf0Q3P5DiHVBmzjyESCVi8I1Q=",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "requires": {
-        "tslib": "^1.7.1"
+        "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": {
diff --git a/demo/package.json b/demo/package.json
index d7d9810..ea5a5cc 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -23,7 +23,7 @@
   },
   "dependencies": {
     "@angular/common": "^4.0.0",
-    "@angular/core": "^4.0.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^4.0.0",
     "@angular/platform-browser": "^4.0.0",
     "@angular/platform-browser-dynamic": "^4.0.0",
diff --git a/demo/yarn.lock b/demo/yarn.lock
index d544fd8..81f869b 100644
--- a/demo/yarn.lock
+++ b/demo/yarn.lock
@@ -22,11 +22,11 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/core@^4.0.0":
-  version "4.4.4"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-4.4.4.tgz#bd37ecf54158f97489996c9386bd222f80a32f5c"
+"@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@^4.0.0":
   version "4.4.6"
@@ -6202,14 +6202,14 @@ tsickle@^0.21.0:
     source-map "^0.5.6"
     source-map-support "^0.4.2"
 
-tslib@^1.7.1:
-  version "1.7.1"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.7.1.tgz#bc8004164691923a79fe8378bbeb3da2017538ec"
-
-tslib@^1.9.0:
+tslib@^1.7.1, tslib@^1.9.0:
   version "1.11.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"