diff --git a/package-lock.json b/package-lock.json
index 0342977..373533e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,10 +23,13 @@
       "dev": true
     },
     "@angular/core": {
-      "version": "4.4.4",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.4.4.tgz",
-      "integrity": "sha1-vTfs9UFY+XSJmWyThr0iL4CjL1w=",
-      "dev": true
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
+      "dev": true,
+      "requires": {
+        "tslib": "^2.0.0"
+      }
     },
     "@angular/platform-browser": {
       "version": "4.4.4",
@@ -904,6 +907,12 @@
       "integrity": "sha1-FuT+zJSQiCOLTL8cOclYJSa2b3Q=",
       "dev": true
     },
+    "tslib": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+      "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==",
+      "dev": true
+    },
     "tslint": {
       "version": "4.5.1",
       "resolved": "https://registry.npmjs.org/tslint/-/tslint-4.5.1.tgz",
diff --git a/package.json b/package.json
index 8848597..b9ab72d 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "@angular/common": "^4.0.0",
     "@angular/compiler": "^4.0.0",
     "@angular/compiler-cli": "^4.0.0",
-    "@angular/core": "^4.0.0",
+    "@angular/core": "^11.0.5",
     "@angular/platform-browser": "^4.0.0",
     "@angular/platform-browser-dynamic": "^4.0.0",
     "@compodoc/compodoc": "^1.0.0-beta.10",