diff --git a/7 Express - implementation/package-lock.json b/7 Express - implementation/package-lock.json
index 68c910e..12ef008 100644
--- a/7 Express - implementation/package-lock.json	
+++ b/7 Express - implementation/package-lock.json	
@@ -1013,11 +1013,18 @@
       }
     },
     "@angular/core": {
-      "version": "8.2.14",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-8.2.14.tgz",
-      "integrity": "sha512-zeePkigi+hPh3rN7yoNENG/YUBUsIvUXdxx+AZq+QPaFeKEA2FBSrKn36ojHFrdJUjKzl0lPMEiGC2b6a6bo6g==",
+      "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": {
diff --git a/7 Express - implementation/package.json b/7 Express - implementation/package.json
index d3015c0..13be0b4 100644
--- a/7 Express - implementation/package.json	
+++ b/7 Express - implementation/package.json	
@@ -34,7 +34,7 @@
     "@angular/animations": "^8.2.0",
     "@angular/common": "^8.2.0",
     "@angular/compiler": "^8.2.0",
-    "@angular/core": "^8.2.0",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^8.2.0",
     "@angular/platform-browser": "^8.2.0",
     "@angular/platform-browser-dynamic": "^8.2.0",
diff --git a/7 Express - implementation/yarn.lock b/7 Express - implementation/yarn.lock
index bb2d0f4..c952120 100644
--- a/7 Express - implementation/yarn.lock	
+++ b/7 Express - implementation/yarn.lock	
@@ -184,11 +184,11 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/core@^8.2.0":
-  version "8.2.14"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-8.2.14.tgz#35566f5b19480369229477e7e0e0fde740bd5204"
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
   dependencies:
-    tslib "^1.9.0"
+    tslib "^2.0.0"
 
 "@angular/forms@^8.2.0":
   version "8.2.14"
@@ -3037,10 +3037,14 @@ core-js@3.2.1, core-js@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.2.1.tgz#cd41f38534da6cc59f7db050fe67307de9868b09"
 
-core-js@^2.4.0, core-js@^2.5.4:
+core-js@^2.4.0:
   version "2.6.10"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.10.tgz#8a5b8391f8cc7013da703411ce5b585706300d7f"
 
+core-js@^3.4.1:
+  version "3.22.8"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.22.8.tgz#23f860b1fe60797cc4f704d76c93fea8a2f60631"
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -9258,6 +9262,10 @@ tslib@1.10.0, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+
 tslint@~5.11.0:
   version "5.11.0"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.11.0.tgz#98f30c02eae3cde7006201e4c33cb08b48581eed"