diff --git a/package-lock.json b/package-lock.json
index 664ee8b..bcb1a60 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,11 +58,18 @@
             }
         },
         "@angular/core": {
-            "version": "5.2.11",
-            "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.11.tgz",
-            "integrity": "sha512-h2vpvXNAdOqKzbVaZcHnHGMT5A8uDnizk6FgGq6SPyw9s3d+/VxZ9LJaPjUk3g2lICA7og1tUel+2YfF971MlQ==",
+            "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": {
@@ -242,7 +249,7 @@
         },
         "acorn": {
             "version": "1.2.2",
-            "resolved": "http://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-1.2.2.tgz",
             "integrity": "sha1-yM4n3grMdtiW0rH6099YjZ6C8BQ="
         },
         "acorn-dynamic-import": {
@@ -554,7 +561,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
                         "ansi-styles": "^2.2.1",
@@ -3719,7 +3726,7 @@
         },
         "http-errors": {
             "version": "1.6.3",
-            "resolved": "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+            "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
             "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
             "requires": {
                 "depd": "~1.1.2",
@@ -4339,7 +4346,7 @@
                 },
                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -4691,7 +4698,7 @@
                 },
                 "yargs": {
                     "version": "11.1.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
                     "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
                     "dev": true,
                     "requires": {
@@ -5506,7 +5513,7 @@
             "dependencies": {
                 "semver": {
                     "version": "5.3.0",
-                    "resolved": "http://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+                    "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
                     "integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8="
                 }
             }
@@ -5592,7 +5599,7 @@
                 },
                 "chalk": {
                     "version": "1.1.3",
-                    "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+                    "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
                     "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
                     "requires": {
                         "ansi-styles": "^2.2.1",
@@ -5842,7 +5849,7 @@
         },
         "os-locale": {
             "version": "1.4.0",
-            "resolved": "http://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
+            "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-1.4.0.tgz",
             "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
             "requires": {
                 "lcid": "^1.0.0"
@@ -7883,7 +7890,7 @@
                 },
                 "yargs": {
                     "version": "3.10.0",
-                    "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
+                    "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.10.0.tgz",
                     "integrity": "sha1-9+572FfdfB0tOMDnTvvWgdFDH9E=",
                     "requires": {
                         "camelcase": "^1.0.2",
@@ -8548,7 +8555,7 @@
                 },
                 "load-json-file": {
                     "version": "2.0.0",
-                    "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
+                    "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-2.0.0.tgz",
                     "integrity": "sha1-eUfkIUmvgNaWy/eXvKq8/h/inKg=",
                     "requires": {
                         "graceful-fs": "^4.1.2",
diff --git a/package.json b/package.json
index 62781fb..0e330a6 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
         "@angular/common": "5.2.11",
         "@angular/compiler": "5.2.11",
         "@angular/compiler-cli": "5.2.11",
-        "@angular/core": "5.2.11",
+        "@angular/core": "11.0.5",
         "@angular/forms": "5.2.11",
         "@angular/http": "5.2.11",
         "@angular/platform-browser": "5.2.11",