diff --git a/package-lock.json b/package-lock.json
index 1433ade..0ad235d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -172,11 +172,18 @@
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-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.10.tgz",
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+      "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": {
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+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+          "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+        }
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@@ -531,6 +538,7 @@
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       "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
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+      "optional": true,
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@@ -1228,6 +1236,7 @@
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       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
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@@ -1371,7 +1380,8 @@
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       "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw=",
-      "dev": true
+      "dev": true,
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@@ -1911,7 +1921,8 @@
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       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
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@@ -2474,7 +2485,8 @@
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       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3905,7 +3917,8 @@
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-          "dev": true
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@@ -3956,7 +3969,8 @@
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           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -3971,6 +3985,7 @@
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           "dev": true,
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@@ -3979,6 +3994,7 @@
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@@ -3987,6 +4003,7 @@
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+          "optional": true,
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@@ -3995,7 +4012,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4012,7 +4030,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4026,22 +4045,26 @@
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+          "dev": true,
+          "optional": true
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+          "dev": true,
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4114,7 +4137,8 @@
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@@ -4136,12 +4160,14 @@
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+          "dev": true,
+          "optional": true
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           "bundled": true,
           "dev": true,
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@@ -4197,6 +4223,7 @@
           "version": "7.1.2",
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           "dev": true,
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@@ -4209,7 +4236,8 @@
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           "version": "4.1.11",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4237,6 +4265,7 @@
           "version": "3.1.3",
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           "dev": true,
+          "optional": true,
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@@ -4247,7 +4276,8 @@
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           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4264,6 +4294,7 @@
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           "dev": true,
+          "optional": true,
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@@ -4272,7 +4303,8 @@
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-          "dev": true
+          "dev": true,
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@@ -4284,6 +4316,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4297,7 +4330,8 @@
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@@ -4386,6 +4420,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4393,12 +4428,14 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4472,6 +4509,7 @@
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           "bundled": true,
           "dev": true,
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@@ -4501,7 +4539,8 @@
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@@ -4512,7 +4551,8 @@
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@@ -4550,6 +4590,7 @@
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           "bundled": true,
           "dev": true,
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@@ -4594,6 +4635,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4601,7 +4643,8 @@
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           "version": "5.0.1",
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-          "dev": true
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+          "optional": true
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@@ -4625,6 +4668,7 @@
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           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4658,6 +4702,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4668,6 +4713,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4682,6 +4728,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4696,6 +4743,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -4751,7 +4799,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
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@@ -4780,7 +4829,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -4789,6 +4839,7 @@
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       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
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@@ -4869,6 +4920,7 @@
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       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
       "dev": true,
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-      "dev": true
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-      "dev": true
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       "integrity": "sha1-zBzjjkU7+YSg93AtLdWcc9CBKEo=",
       "dev": true,
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@@ -5622,6 +5677,7 @@
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       "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
       "dev": true,
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@@ -5631,7 +5687,8 @@
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-      "dev": true
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       "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
       "dev": true,
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@@ -6661,7 +6720,8 @@
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           "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es=",
-          "dev": true
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@@ -7579,7 +7640,8 @@
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-          "dev": true
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@@ -7593,6 +7655,7 @@
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           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
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@@ -7654,7 +7717,8 @@
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-          "dev": true
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@@ -7730,13 +7794,15 @@
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-      "dev": true
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       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
       "dev": true,
+      "optional": true,
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@@ -7769,7 +7835,8 @@
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       "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U=",
-      "dev": true
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@@ -7822,6 +7889,7 @@
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       "dev": true,
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-      "dev": true
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+      "optional": true
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-      "dev": true
+      "dev": true,
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       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
       "dev": true,
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@@ -10273,6 +10344,7 @@
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       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
       "dev": true,
+      "optional": true,
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@@ -10283,6 +10355,7 @@
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       "dev": true,
+      "optional": true,
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@@ -11183,6 +11256,7 @@
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       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -11284,7 +11358,8 @@
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       "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-      "dev": true
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@@ -12914,6 +12989,7 @@
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       "dev": true,
+      "optional": true,
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diff --git a/package.json b/package.json
index 0636a1f..6dc1522 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@angular/animations": "^5.2.10",
     "@angular/common": "^5.2.10",
     "@angular/compiler": "^5.2.10",
-    "@angular/core": "^5.2.10",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^5.2.10",
     "@angular/http": "^5.2.10",
     "@angular/platform-browser": "^5.2.10",