diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index dc5fa93..b6f747b
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "@angular/cdk": "^7.3.3",
     "@angular/common": "^7.2.6",
     "@angular/compiler": "^7.2.6",
-    "@angular/core": "^7.2.6",
+    "@angular/core": "^11.0.5",
     "@angular/forms": "^7.2.6",
     "@angular/http": "^7.2.6",
     "@angular/platform-browser": "^7.2.6",
diff --git a/yarn.lock b/yarn.lock
index b038839..1b9ec53 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -176,12 +176,12 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/core@^7.2.6":
-  version "7.2.15"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-7.2.15.tgz#c00d4be0ebe95b70f7631154169509cc97934e9a"
-  integrity sha512-XsuYm0jEU/mOqwDOk2utThv8J9kESkAerfuCHClE9rB2TtHUOGCfekF7lJWqjjypu6/J9ygoPFo7hdAE058ZGg==
+"@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@^7.2.6":
   version "7.2.15"
@@ -8211,6 +8211,11 @@ tslib@^1.7.1, 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@^5.10.0:
   version "5.18.0"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.18.0.tgz#f61a6ddcf372344ac5e41708095bbf043a147ac6"