diff --git a/src/UI/Buyer/package.json b/src/UI/Buyer/package.json
index d1fb5105..a09cddc9 100644
--- a/src/UI/Buyer/package.json
+++ b/src/UI/Buyer/package.json
@@ -16,7 +16,7 @@
     "@angular/animations": "^8.1.2",
     "@angular/common": "^8.1.2",
     "@angular/compiler": "^8.1.2",
-    "@angular/core": "^8.1.2",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^8.1.2",
     "@angular/http": "^7.0.0",
     "@angular/platform-browser": "^8.1.2",
diff --git a/src/UI/Buyer/yarn.lock b/src/UI/Buyer/yarn.lock
index 183cd8d9..a3520c57 100644
--- a/src/UI/Buyer/yarn.lock
+++ b/src/UI/Buyer/yarn.lock
@@ -183,12 +183,12 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/core@^8.1.2":
-  version "8.2.2"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-8.2.2.tgz#f99a21461fbd6506f73493d5ae8d7027f5a0751a"
-  integrity sha512-glQLJ3aeRWHMsN9QeJYis5FVdCg0lBU2s9aFX9i6WvVLscYmGoBk+TKsgO+uJjLnUUgsCPLRLzde02IJEQzCGw==
+"@angular/core@^11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
+  integrity sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==
   dependencies:
-    tslib "^1.9.0"
+    tslib "^2.0.0"
 
 "@angular/forms@^8.1.2":
   version "8.2.2"
@@ -7479,6 +7479,11 @@ tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
   integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+  integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==
+
 tslint@~5.9.1:
   version "5.9.1"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.9.1.tgz#1255f87a3ff57eb0b0e1f0e610a8b4748046c9ae"