diff --git a/assignment-project/package-lock.json b/assignment-project/package-lock.json
index 43bcda5..de8e4d3 100644
--- a/assignment-project/package-lock.json
+++ b/assignment-project/package-lock.json
@@ -11715,9 +11715,9 @@
       }
     },
     "tslib": {
-      "version": "1.9.3",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
-      "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ=="
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.11.1.tgz",
+      "integrity": "sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA=="
     },
     "tslint": {
       "version": "5.11.0",
diff --git a/assignment-project/package.json b/assignment-project/package.json
index c25afb0..b438eaa 100644
--- a/assignment-project/package.json
+++ b/assignment-project/package.json
@@ -22,7 +22,7 @@
     "bootstrap": "^4.3.1",
     "core-js": "^2.5.4",
     "rxjs": "~6.3.3",
-    "tslib": "^1.9.0",
+    "tslib": "^1.11.1",
     "zone.js": "~0.8.26"
   },
   "devDependencies": {