diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index b5e833d..d280ebf
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
   "dependencies": {
     "@angular/animations": "4.1.0",
     "@angular/common": "4.1.0",
-    "@angular/core": "4.1.0",
+    "@angular/core": "11.0.5",
     "@angular/forms": "4.1.0",
     "@angular/http": "4.1.0",
     "@angular/platform-browser": "4.1.0",
diff --git a/yarn.lock b/yarn.lock
old mode 100755
new mode 100644
index 4a1ff70..e9b651a
--- a/yarn.lock
+++ b/yarn.lock
@@ -22,9 +22,11 @@
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/@angular/compiler/-/compiler-4.1.0.tgz#be1ade5b6aec81f03c29d52bcb95925a28900dcb"
 
-"@angular/core@4.1.0":
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-4.1.0.tgz#72ec173316879571880c9c483ed6dfc0caab94b0"
+"@angular/core@11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
+  dependencies:
+    tslib "^2.0.0"
 
 "@angular/forms@4.1.0":
   version "4.1.0"
@@ -3290,6 +3292,10 @@ tslib@1.6.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.6.1.tgz#b77b09abc5fa4935e157d838b80e36dad47152c4"
 
+tslib@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"