diff --git a/stockmarket-angular2/package-lock.json b/stockmarket-angular2/package-lock.json
index 392f0fa..0b60127 100644
--- a/stockmarket-angular2/package-lock.json
+++ b/stockmarket-angular2/package-lock.json
@@ -122,11 +122,18 @@
       }
     },
     "@angular/core": {
-      "version": "4.4.7",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-4.4.7.tgz",
-      "integrity": "sha512-Jxs6gNTl5KjXflg5vi5rlnokq1johFccN94qSOgDv+Mg1iuGF2i9p7EHkw3Y8jBCVaSLw1qgHE+wMb6KTlJDLA==",
+      "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": {
@@ -13061,8 +13068,8 @@
       "integrity": "sha512-Fw0Y5owXy1aTEqOy1YTtZIFEDTg32PeTkAK2X3k3rVSZkLx2KHvswzbV17CvC6zzuvfXFJo4AVxo9RazzHKzbQ==",
       "requires": {
         "core-js": "^2.4.1",
-        "eventsource": "eventsource@github:streamdataio/eventsource-js#92ceda879f6d4e6d45fd6bb6fc82ca12a0c2c5db",
-        "eventsource-polyfill": "eventsource-polyfill@github:streamdataio/EventSource#bc353046d1eef182642e1d85deb442a3fd62849e"
+        "eventsource": "github:streamdataio/eventsource-js#92ceda879f6d4e6d45fd6bb6fc82ca12a0c2c5db",
+        "eventsource-polyfill": "github:streamdataio/EventSource#bc353046d1eef182642e1d85deb442a3fd62849e"
       }
     },
     "strict-uri-encode": {
diff --git a/stockmarket-angular2/package.json b/stockmarket-angular2/package.json
index 0bb5a3c..f0c084f 100644
--- a/stockmarket-angular2/package.json
+++ b/stockmarket-angular2/package.json
@@ -16,7 +16,7 @@
     "@angular/cdk": "2.0.0-beta.8",
     "@angular/common": "^4.4.7",
     "@angular/compiler": "^4.4.7",
-    "@angular/core": "^4.4.7",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^4.4.7",
     "@angular/http": "^4.4.7",
     "@angular/material": "2.0.0-beta.8",