diff --git a/guessthenumber/package-lock.json b/guessthenumber/package-lock.json
index 5187136..0c7f2f9 100644
--- a/guessthenumber/package-lock.json
+++ b/guessthenumber/package-lock.json
@@ -1401,7 +1401,8 @@
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               "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
               "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "assert-plus": {
               "version": "0.2.0",
@@ -1429,6 +1430,7 @@
               "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
               "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
               "dev": true,
+              "optional": true,
               "requires": {
                 "ansi-styles": "2.2.1",
                 "escape-string-regexp": "1.0.5",
@@ -1514,7 +1516,8 @@
               "version": "2.0.0",
               "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
               "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
-              "dev": true
+              "dev": true,
+              "optional": true
             },
             "tunnel-agent": {
               "version": "0.4.3",
@@ -2609,11 +2612,18 @@
       }
     },
     "@angular/core": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-6.0.3.tgz",
-      "integrity": "sha512-YJk0kS/V9C2JFKMHfiw6TNxmfkYWGW4HzqGOm/VoPkvj9O4Erkz/OtOOc8hYGmXFmQz1UpOAByzY2XIlEi72XQ==",
+      "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": {
@@ -3409,6 +3419,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "3.2.2",
         "longest": "1.0.1",
@@ -5949,6 +5960,7 @@
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
+      "optional": true,
       "requires": {
         "graceful-fs": "4.1.11",
         "inherits": "2.0.3",
@@ -7747,7 +7759,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
diff --git a/guessthenumber/package.json b/guessthenumber/package.json
index 7cc9450..17c6e7c 100644
--- a/guessthenumber/package.json
+++ b/guessthenumber/package.json
@@ -14,7 +14,7 @@
     "@angular/animations": "^6.0.3",
     "@angular/common": "^6.0.3",
     "@angular/compiler": "^6.0.3",
-    "@angular/core": "^6.0.3",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^6.0.3",
     "@angular/http": "^6.0.3",
     "@angular/platform-browser": "^6.0.3",