diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 0eca971..d0c4e2d 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -172,11 +172,18 @@
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     },
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-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.9.tgz",
-      "integrity": "sha512-cvHBJGtasrIoARvbLFyHaOsiWKVwMNrrSTZLwrlyHP8oYzkDrE0qKGer6QCqyKt+51hF53cgWEffGzM/u/0wYg==",
+      "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": {
@@ -551,6 +558,7 @@
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       "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
       "dev": true,
+      "optional": true,
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         "readable-stream": "^2.0.6"
@@ -1522,7 +1530,8 @@
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       "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -2067,7 +2076,8 @@
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       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -2578,7 +2588,8 @@
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       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3710,7 +3721,8 @@
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "1.1.1",
@@ -3761,7 +3773,8 @@
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           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3776,6 +3789,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3784,6 +3798,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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           }
@@ -3792,6 +3807,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -3800,7 +3816,8 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3817,12 +3834,14 @@
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3830,22 +3849,26 @@
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "core-util-is": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3885,7 +3908,8 @@
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           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3917,7 +3941,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3939,12 +3964,14 @@
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           "version": "1.0.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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         "fstream": {
           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "inherits": "~2.0.0",
@@ -4000,6 +4027,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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             "inflight": "^1.0.4",
@@ -4012,7 +4040,8 @@
         "graceful-fs": {
           "version": "4.1.11",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4040,6 +4069,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4050,7 +4080,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4067,6 +4098,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4075,7 +4107,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4087,6 +4120,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4100,7 +4134,8 @@
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           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4173,12 +4208,14 @@
         "mime-db": {
           "version": "1.27.0",
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-          "dev": true
+          "dev": true,
+          "optional": true
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         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4187,6 +4224,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4194,12 +4232,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -4254,7 +4294,8 @@
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           "version": "1.0.1",
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-          "dev": true
+          "dev": true,
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@@ -4272,6 +4313,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4301,7 +4343,8 @@
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           "version": "1.0.1",
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-          "dev": true
+          "dev": true,
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@@ -4312,7 +4355,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4350,6 +4394,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4394,6 +4439,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "glob": "^7.0.5"
           }
@@ -4401,7 +4447,8 @@
         "safe-buffer": {
           "version": "5.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "semver": {
           "version": "5.3.0",
@@ -4425,6 +4472,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.x.x"
           }
@@ -4458,6 +4506,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4468,6 +4517,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.0.1"
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@@ -4482,6 +4532,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4496,6 +4547,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4551,7 +4603,8 @@
         "util-deprecate": {
           "version": "1.0.2",
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-          "dev": true
+          "dev": true,
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@@ -4580,7 +4633,8 @@
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           "version": "1.0.2",
           "bundled": true,
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       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
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@@ -5325,6 +5383,7 @@
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       "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
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-      "dev": true
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       "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
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-          "dev": true
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-          "dev": true
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           "dev": true,
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       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
       "dev": true,
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       "dev": true,
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-      "dev": true
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       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
       "dev": true,
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@@ -9706,6 +9780,7 @@
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       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
       "dev": true,
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@@ -9716,6 +9791,7 @@
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       "dev": true,
+      "optional": true,
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@@ -10601,6 +10677,7 @@
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       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
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@@ -10708,7 +10785,8 @@
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@@ -12324,6 +12402,7 @@
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.2.tgz",
       "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
       "dev": true,
+      "optional": true,
       "requires": {
         "string-width": "^1.0.2"
       }
diff --git a/frontend/package.json b/frontend/package.json
index 24c8a47..3b441dd 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -15,7 +15,7 @@
     "@angular/animations": "^5.2.0",
     "@angular/common": "^5.2.0",
     "@angular/compiler": "^5.2.0",
-    "@angular/core": "^5.2.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.2.0",
     "@angular/http": "^5.2.0",
     "@angular/platform-browser": "^5.2.0",