diff --git a/package-lock.json b/package-lock.json
index ae66685..4dd1e7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -405,11 +405,18 @@
       }
     },
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-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-7.2.15.tgz",
-      "integrity": "sha512-XsuYm0jEU/mOqwDOk2utThv8J9kESkAerfuCHClE9rB2TtHUOGCfekF7lJWqjjypu6/J9ygoPFo7hdAE058ZGg==",
+      "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": {
@@ -882,6 +889,7 @@
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       "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
       "dev": true,
+      "optional": true,
       "requires": {
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         "readable-stream": "^2.0.6"
@@ -1946,7 +1954,8 @@
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       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "constants-browserify": {
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@@ -2313,7 +2322,8 @@
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       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
       "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3112,7 +3122,6 @@
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-      "dev": true,
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@@ -3122,24 +3131,21 @@
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-          "dev": true,
           "optional": true
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           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "optional": true
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           "version": "1.2.0",
           "bundled": true,
-          "dev": true,
           "optional": true
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         "are-we-there-yet": {
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           "bundled": true,
-          "dev": true,
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           "requires": {
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@@ -3149,12 +3155,12 @@
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           "bundled": true,
-          "dev": true
+          "optional": true
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           "version": "1.1.11",
           "bundled": true,
-          "dev": true,
+          "optional": true,
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@@ -3163,34 +3169,31 @@
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-          "dev": true,
           "optional": true
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           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "optional": true
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           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "optional": true
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-          "dev": true,
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-          "dev": true,
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@@ -3199,25 +3202,21 @@
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-          "dev": true,
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-          "dev": true,
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@@ -3226,13 +3225,11 @@
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-          "dev": true,
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-          "dev": true,
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@@ -3248,7 +3245,6 @@
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-          "dev": true,
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@@ -3262,13 +3258,11 @@
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-          "dev": true,
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@@ -3277,7 +3271,6 @@
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           "bundled": true,
-          "dev": true,
           "optional": true,
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@@ -3286,7 +3279,6 @@
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           "bundled": true,
-          "dev": true,
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@@ -3296,18 +3288,17 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "optional": true
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           "version": "1.3.5",
           "bundled": true,
-          "dev": true,
           "optional": true
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         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3315,13 +3306,12 @@
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-          "dev": true,
           "optional": true
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         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3329,12 +3319,12 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -3343,7 +3333,6 @@
         "minizlib": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
             "minipass": "^2.2.1"
@@ -3352,7 +3341,7 @@
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3360,13 +3349,11 @@
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-          "dev": true,
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-          "dev": true,
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@@ -3377,7 +3364,6 @@
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           "bundled": true,
-          "dev": true,
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           "requires": {
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@@ -3395,7 +3381,6 @@
         "nopt": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
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@@ -3405,13 +3390,11 @@
         "npm-bundled": {
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-          "dev": true,
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-          "dev": true,
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@@ -3421,7 +3404,6 @@
         "npmlog": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
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@@ -3433,18 +3415,17 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
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-          "dev": true,
           "optional": true
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         "once": {
           "version": "1.4.0",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -3452,19 +3433,16 @@
         "os-homedir": {
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-          "dev": true,
           "optional": true
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           "version": "1.0.2",
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-          "dev": true,
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         "osenv": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
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@@ -3474,19 +3452,16 @@
         "path-is-absolute": {
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-          "dev": true,
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         "rc": {
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-          "dev": true,
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           "requires": {
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@@ -3498,7 +3473,6 @@
             "minimist": {
               "version": "1.2.0",
               "bundled": true,
-              "dev": true,
               "optional": true
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           }
@@ -3506,7 +3480,6 @@
         "readable-stream": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
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@@ -3521,7 +3494,6 @@
         "rimraf": {
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           "bundled": true,
-          "dev": true,
           "optional": true,
           "requires": {
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@@ -3530,42 +3502,37 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "optional": true
         },
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           "version": "2.1.2",
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-          "dev": true,
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           "version": "1.0.2",
           "bundled": true,
-          "dev": true,
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@@ -3575,7 +3542,6 @@
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@@ -3584,7 +3550,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
-          "dev": true,
+          "optional": true,
           "requires": {
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@@ -3592,13 +3558,11 @@
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@@ -3613,13 +3577,11 @@
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-          "dev": true,
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@@ -3628,12 +3590,12 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "optional": true
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         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "optional": true
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@@ -3642,6 +3604,7 @@
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       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
+      "optional": true,
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@@ -3654,6 +3617,7 @@
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       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
       "dev": true,
+      "optional": true,
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@@ -3691,7 +3655,8 @@
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       "integrity": "sha1-uWjGsKBDhDJJAui/Gl3zJXmkUP4=",
-      "dev": true
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@@ -3838,7 +3803,8 @@
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-      "dev": true
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+      "optional": true
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@@ -4564,7 +4530,8 @@
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       "integrity": "sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=",
-      "dev": true
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@@ -4890,6 +4857,7 @@
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       "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
       "dev": true,
+      "optional": true,
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@@ -4902,7 +4870,8 @@
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-          "dev": true
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@@ -5133,7 +5102,8 @@
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-      "dev": true
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+      "optional": true
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@@ -5457,7 +5427,6 @@
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-      "dev": true,
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@@ -5752,6 +5721,7 @@
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       "dev": true,
+      "optional": true,
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@@ -6751,6 +6721,7 @@
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       "integrity": "sha1-nWPBMnbAZZGNV/ACpX9AobZD+wI=",
       "dev": true,
+      "optional": true,
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@@ -6761,6 +6732,7 @@
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           "integrity": "sha1-ay6YIrGizgpgq2TWEOzK1TyyTQ8=",
           "dev": true,
+          "optional": true,
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@@ -6771,6 +6743,7 @@
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           "integrity": "sha1-D+tsZPD8UY2adU3V77YscCJ2H0s=",
           "dev": true,
+          "optional": true,
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@@ -6780,6 +6753,7 @@
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           "integrity": "sha1-WcRPfuSR2nBNpBXaWkBwuk+P5EE=",
           "dev": true,
+          "optional": true,
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             "pify": "^2.0.0",
@@ -6790,13 +6764,15 @@
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           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
-          "dev": true
+          "dev": true,
+          "optional": true
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           "integrity": "sha1-9f+qXs0pyzHAR0vKfXVra7KePyg=",
           "dev": true,
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           "requires": {
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@@ -7960,6 +7936,7 @@
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       "integrity": "sha1-YhmoVhZSBJHzV4i9vxRHqZx+aw4=",
       "dev": true,
+      "optional": true,
       "requires": {
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       }
@@ -9248,6 +9225,7 @@
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       "dev": true,
+      "optional": true,
       "requires": {
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       }
diff --git a/package.json b/package.json
index ea4d549..76b6b73 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@angular/animations": "~7.2.0",
     "@angular/common": "~7.2.0",
     "@angular/compiler": "~7.2.0",
-    "@angular/core": "~7.2.0",
+    "@angular/core": "~11.0.5",
     "@angular/forms": "~7.2.0",
     "@angular/platform-browser": "~7.2.0",
     "@angular/platform-browser-dynamic": "~7.2.0",