diff --git a/package-lock.json b/package-lock.json
index f1f8ddf7..ea399901 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4430,9 +4430,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "2.8.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.8.3.tgz",
-      "integrity": "sha512-K7g15Bb6Ra4lKf7Iq2l/I5/En+hLIHmxWZGq3D4DIRNFxMNV6j2SHSvDOqs2tGd4UvD/fJvrwopzQXjLrT7Itw==",
+      "version": "2.9.1",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-2.9.1.tgz",
+      "integrity": "sha512-h6pM2f/GDchCFlldnriOhs1QHuwbnmj6/v7499eMHqPeW4V2G0elua2eIc2nu8v2NdHV0Gm+tzX83Hr6nUFjQA==",
       "dev": true
     },
     "ua-parser-js": {