diff --git a/package-lock.json b/package-lock.json
index 8194e3c..5021a0f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -99,6 +99,14 @@
         "tslib": "1.10.0",
         "typescript": "3.5.3",
         "webpack-sources": "1.4.3"
+      },
+      "dependencies": {
+        "tslib": {
+          "version": "1.10.0",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
+          "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==",
+          "dev": true
+        }
       }
     },
     "@angular-devkit/build-webpack": {
@@ -16307,9 +16315,9 @@
       }
     },
     "tslib": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
-      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.11.1.tgz",
+      "integrity": "sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA=="
     },
     "tslint": {
       "version": "5.15.0",
diff --git a/package.json b/package.json
index 6d356db..f2863ca 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@angular/router": "~8.2.7",
     "bootstrap": "^4.3.1",
     "rxjs": "~6.4.0",
-    "tslib": "^1.10.0",
+    "tslib": "^1.11.1",
     "zone.js": "~0.9.1"
   },
   "devDependencies": {