diff --git a/package-lock.json b/package-lock.json
index 67faddf..371dc53 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -51,11 +51,18 @@
             }
         },
         "@angular/core": {
-            "version": "5.0.0",
-            "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.0.0.tgz",
-            "integrity": "sha1-T5dqIl993fNJkvLK2CTJVDpG9Mg=",
+            "version": "11.0.5",
+            "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+            "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
             "requires": {
-                "tslib": "1.9.0"
+                "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": {
@@ -2995,7 +3002,8 @@
                 },
                 "ansi-regex": {
                     "version": "2.1.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "aproba": {
                     "version": "1.2.0",
@@ -3013,11 +3021,13 @@
                 },
                 "balanced-match": {
                     "version": "1.0.0",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "brace-expansion": {
                     "version": "1.1.11",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "balanced-match": "1.0.0",
                         "concat-map": "0.0.1"
@@ -3030,15 +3040,18 @@
                 },
                 "code-point-at": {
                     "version": "1.1.0",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "concat-map": {
                     "version": "0.0.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "console-control-strings": {
                     "version": "1.1.0",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "core-util-is": {
                     "version": "1.0.2",
@@ -3141,7 +3154,8 @@
                 },
                 "inherits": {
                     "version": "2.0.3",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "ini": {
                     "version": "1.3.5",
@@ -3151,6 +3165,7 @@
                 "is-fullwidth-code-point": {
                     "version": "1.0.0",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "number-is-nan": "1.0.1"
                     }
@@ -3163,17 +3178,20 @@
                 "minimatch": {
                     "version": "3.0.4",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "brace-expansion": "1.1.11"
                     }
                 },
                 "minimist": {
                     "version": "0.0.8",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "minipass": {
                     "version": "2.2.4",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "safe-buffer": "5.1.1",
                         "yallist": "3.0.2"
@@ -3190,6 +3208,7 @@
                 "mkdirp": {
                     "version": "0.5.1",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "minimist": "0.0.8"
                     }
@@ -3262,7 +3281,8 @@
                 },
                 "number-is-nan": {
                     "version": "1.0.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "object-assign": {
                     "version": "4.1.1",
@@ -3272,6 +3292,7 @@
                 "once": {
                     "version": "1.4.0",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "wrappy": "1.0.2"
                     }
@@ -3347,7 +3368,8 @@
                 },
                 "safe-buffer": {
                     "version": "5.1.1",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "safer-buffer": {
                     "version": "2.1.2",
@@ -3377,6 +3399,7 @@
                 "string-width": {
                     "version": "1.0.2",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "code-point-at": "1.1.0",
                         "is-fullwidth-code-point": "1.0.0",
@@ -3394,6 +3417,7 @@
                 "strip-ansi": {
                     "version": "3.0.1",
                     "bundled": true,
+                    "optional": true,
                     "requires": {
                         "ansi-regex": "2.1.1"
                     }
@@ -3432,11 +3456,13 @@
                 },
                 "wrappy": {
                     "version": "1.0.2",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 },
                 "yallist": {
                     "version": "3.0.2",
-                    "bundled": true
+                    "bundled": true,
+                    "optional": true
                 }
             }
         },
diff --git a/package.json b/package.json
index e463c69..e593a57 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
         "@angular/common": "5.0.0",
         "@angular/compiler": "5.0.0",
         "@angular/compiler-cli": "5.0.0",
-        "@angular/core": "5.0.0",
+        "@angular/core": "11.0.5",
         "@angular/forms": "5.0.0",
         "@angular/http": "5.0.0",
         "@angular/platform-browser": "5.0.0",