diff --git a/package-lock.json b/package-lock.json
index b11b15d..f346178 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -144,69 +144,76 @@
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-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+          "version": "1.2.6",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.6.tgz",
+          "integrity": "sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==",
           "dev": true
-        },
-        "source-map-support": {
-          "version": "0.5.3",
-          "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.3.tgz",
-          "integrity": "sha512-eKkTgWYeBOQqFGXRfKabMFdnWepo51vWqEdoeikaEPFiJC7MCU5j2h4+6Q8npkZTeLGbSyecZvRxiSoWl3rh+w==",
-          "dev": true,
-          "requires": {
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@@ -16662,6 +16764,7 @@
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       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
         "prelude-ls": "1.1.2"
       }
@@ -16774,7 +16877,8 @@
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
       "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "union-value": {
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@@ -18775,6 +18879,7 @@
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       "dev": true,
+      "optional": true,
       "requires": {
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@@ -18981,9 +19086,9 @@
       "dev": true
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     "zone.js": {
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-      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.8.20.tgz",
-      "integrity": "sha512-FXlA37ErSXCMy5RNBcGFgCI/Zivqzr0D19GuvDxhcYIJc7xkFp6c29DKyODJu0Zo+EMyur/WPPgcBh1EHjB9jA=="
+      "version": "0.8.19",
+      "resolved": "https://registry.npmjs.org/zone.js/-/zone.js-0.8.19.tgz",
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 }
diff --git a/package.json b/package.json
index 9631276..30b2144 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "@angular/cdk": "5.2.4",
     "@angular/common": "5.2.0",
     "@angular/compiler": "5.2.0",
-    "@angular/core": "5.2.0",
+    "@angular/core": "11.0.5",
     "@angular/forms": "5.2.0",
     "@angular/http": "5.2.0",
     "@angular/material": "5.2.4",