diff --git a/tourit/package-lock.json b/tourit/package-lock.json
index 8de55c9..619ef9a 100644
--- a/tourit/package-lock.json
+++ b/tourit/package-lock.json
@@ -134,11 +134,18 @@
       }
     },
     "@angular/core": {
-      "version": "4.3.6",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.3.6.tgz",
-      "integrity": "sha1-u6xj1o0Pe8s4nRKzQghlK+MofpY=",
+      "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": {
diff --git a/tourit/package.json b/tourit/package.json
index ba48f3c..51516d8 100644
--- a/tourit/package.json
+++ b/tourit/package.json
@@ -15,7 +15,7 @@
     "@angular/animations": "^4.2.4",
     "@angular/common": "^4.2.4",
     "@angular/compiler": "^4.2.4",
-    "@angular/core": "^4.2.4",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^4.2.4",
     "@angular/http": "^4.2.4",
     "@angular/platform-browser": "^4.2.4",