diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 628b71e0..17d4de9d
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
   "dependencies": {
     "@angular/animations": "4.3.0",
     "@angular/common": "4.3.0",
-    "@angular/core": "4.3.0",
+    "@angular/core": "11.0.5",
     "@angular/forms": "4.3.0",
     "@angular/http": "4.3.0",
     "@angular/platform-browser": "4.3.0",
diff --git a/yarn.lock b/yarn.lock
index da4cc22a..343f0098 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -28,11 +28,11 @@
   dependencies:
     tslib "^1.7.1"
 
-"@angular/core@4.3.0":
-  version "4.3.0"
-  resolved "https://registry.yarnpkg.com/@angular/core/-/core-4.3.0.tgz#bd2249c3de1224a7c6536c4aba728d6565329334"
+"@angular/core@11.0.5":
+  version "11.0.5"
+  resolved "https://registry.yarnpkg.com/@angular/core/-/core-11.0.5.tgz#b8c448c3cd4f6dae7327cc1ba4ee2aa29c8dbc26"
   dependencies:
-    tslib "^1.7.1"
+    tslib "^2.0.0"
 
 "@angular/forms@4.3.0":
   version "4.3.0"
@@ -3838,6 +3838,10 @@ tslib@1.7.1, tslib@^1.7.1:
   version "1.7.1"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.7.1.tgz#bc8004164691923a79fe8378bbeb3da2017538ec"
 
+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"