diff --git a/package-lock.json b/package-lock.json
index e3ccd8788..c3408281c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18272,9 +18272,9 @@
       }
     },
     "tslib": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz",
-      "integrity": "sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw=="
+      "version": "2.4.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+      "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
     },
     "tslint": {
       "version": "6.1.3",
diff --git a/package.json b/package.json
index 12fc84788..4b72b0f2d 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "moment-es6": "1.0.0",
     "pdfjs-dist": "2.5.207",
     "rxjs": "^6.6.3",
-    "tslib": "^2.3.1",
+    "tslib": "^2.4.0",
     "zone.js": "~0.10.2"
   },
   "devDependencies": {