diff --git a/package-lock.json b/package-lock.json
index e22d918..4dca225 100644
--- a/package-lock.json
+++ b/package-lock.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",
@@ -141,7 +141,6 @@
         "lodash": "^4.11.1",
         "memory-fs": "^0.4.1",
         "node-modules-path": "^1.0.0",
-        "node-sass": "^4.3.0",
         "nopt": "^4.0.1",
         "opn": "~5.1.0",
         "portfinder": "~1.0.12",
@@ -210,13 +209,22 @@
       }
     },
     "node_modules/@angular/core": {
-      "version": "4.4.4",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.4.4.tgz",
-      "integrity": "sha1-vTfs9UFY+XSJmWyThr0iL4CjL1w=",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "dependencies": {
-        "tslib": "^1.7.1"
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "rxjs": "^6.5.3",
+        "zone.js": "~0.10.3"
       }
     },
+    "node_modules/@angular/core/node_modules/tslib": {
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+      "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+    },
     "node_modules/@angular/forms": {
       "version": "4.4.4",
       "resolved": "https://registry.npmjs.org/@angular/forms/-/forms-4.4.4.tgz",
@@ -1379,7 +1387,6 @@
       "dependencies": {
         "anymatch": "^1.3.0",
         "async-each": "^1.0.0",
-        "fsevents": "^1.0.0",
         "glob-parent": "^2.0.0",
         "inherits": "^2.0.1",
         "is-binary-path": "^1.0.0",
@@ -4767,8 +4774,7 @@
       "integrity": "sha1-npsTCpPjiUkTItl1zz7BgYw3zjQ=",
       "dev": true,
       "dependencies": {
-        "optimist": "~0.3",
-        "uglify-js": "~2.3"
+        "optimist": "~0.3"
       },
       "bin": {
         "handlebars": "bin/handlebars"
@@ -5866,8 +5872,7 @@
       "dependencies": {
         "async": "^1.4.0",
         "optimist": "^0.6.1",
-        "source-map": "^0.4.4",
-        "uglify-js": "^2.6"
+        "source-map": "^0.4.4"
       },
       "bin": {
         "handlebars": "bin/handlebars"
@@ -6274,10 +6279,8 @@
       "dependencies": {
         "errno": "^0.1.1",
         "graceful-fs": "^4.1.2",
-        "image-size": "~0.5.0",
         "mime": "^1.2.11",
         "mkdirp": "^0.5.0",
-        "promise": "^7.1.1",
         "request": "^2.72.0",
         "source-map": "^0.5.3"
       },
@@ -9707,12 +9710,8 @@
       "dependencies": {
         "asn1": "~0.2.3",
         "assert-plus": "^1.0.0",
-        "bcrypt-pbkdf": "^1.0.0",
         "dashdash": "^1.12.0",
-        "ecc-jsbn": "~0.1.1",
-        "getpass": "^0.1.1",
-        "jsbn": "~0.1.0",
-        "tweetnacl": "~0.14.0"
+        "getpass": "^0.1.1"
       },
       "engines": {
         "node": ">=0.10.0"
@@ -10313,7 +10312,6 @@
       "dev": true,
       "dependencies": {
         "source-map": "~0.5.1",
-        "uglify-to-browserify": "~1.0.0",
         "yargs": "~3.10.0"
       },
       "bin": {
@@ -10730,7 +10728,6 @@
       "dev": true,
       "dependencies": {
         "source-map": "~0.5.1",
-        "uglify-to-browserify": "~1.0.0",
         "yargs": "~3.10.0"
       },
       "bin": {
@@ -11476,11 +11473,18 @@
       }
     },
     "@angular/core": {
-      "version": "4.4.4",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.4.4.tgz",
-      "integrity": "sha1-vTfs9UFY+XSJmWyThr0iL4CjL1w=",
+      "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/package.json b/package.json
index a9b1234..55e42ac 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "@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",