diff --git a/package-lock.json b/package-lock.json
index 6211452..5771947 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -66,11 +66,18 @@
       }
     },
     "@angular/core": {
-      "version": "5.2.10",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-5.2.10.tgz",
-      "integrity": "sha512-glDuTtHTcAVhfU3NVewxz/W+Iweq5IaeW2tnMa+RKLopYk9fRs8eR5iTixTGvegwKR770vfXg/gR7P6Ii5cYGQ==",
+      "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": {
@@ -2689,7 +2696,8 @@
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2707,11 +2715,13 @@
         },
         "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"
@@ -2724,15 +2734,18 @@
         },
         "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",
@@ -2835,7 +2848,8 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -2845,6 +2859,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -2857,17 +2872,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
         },
         "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": "^3.0.0"
@@ -2884,6 +2902,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -2956,7 +2975,8 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -2966,6 +2986,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3041,7 +3062,8 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -3071,6 +3093,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -3088,6 +3111,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -3126,11 +3150,13 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         }
       }
     },
@@ -6987,7 +7013,8 @@
                 },
                 "console-control-strings": {
                   "version": "1.1.0",
-                  "bundled": true
+                  "bundled": true,
+                  "optional": true
                 },
                 "gauge": {
                   "version": "2.6.0",
@@ -7023,6 +7050,7 @@
                     "string-width": {
                       "version": "1.0.2",
                       "bundled": true,
+                      "optional": true,
                       "requires": {
                         "code-point-at": "^1.0.0",
                         "is-fullwidth-code-point": "^1.0.0",
@@ -7032,26 +7060,30 @@
                         "code-point-at": {
                           "version": "1.0.0",
                           "bundled": true,
+                          "optional": true,
                           "requires": {
                             "number-is-nan": "^1.0.0"
                           },
                           "dependencies": {
                             "number-is-nan": {
                               "version": "1.0.0",
-                              "bundled": true
+                              "bundled": true,
+                              "optional": true
                             }
                           }
                         },
                         "is-fullwidth-code-point": {
                           "version": "1.0.0",
                           "bundled": true,
+                          "optional": true,
                           "requires": {
                             "number-is-nan": "^1.0.0"
                           },
                           "dependencies": {
                             "number-is-nan": {
                               "version": "1.0.0",
-                              "bundled": true
+                              "bundled": true,
+                              "optional": true
                             }
                           }
                         }
@@ -9559,6 +9591,11 @@
         "execa": "^0.7.0"
       }
     },
+    "text-to-speech": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/text-to-speech/-/text-to-speech-1.0.10.tgz",
+      "integrity": "sha512-d8CuxN65WqkY4+PxdBvp2gEKjazCydhX3x8JdWmL3Fa2nIw7kX4nJijmoaTTcBKQA0xNsoAZZVe/arWrHjs4GQ=="
+    },
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
diff --git a/package.json b/package.json
index 41538fd..869e2e5 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "@angular/common": "5.2.10",
     "@angular/compiler": "5.2.10",
     "@angular/compiler-cli": "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",