diff --git a/package.json b/package.json
index 6a0ec4de..331715e9 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "rxjs": "6.0.0",
     "rxjs-compat": "6.0.0",
     "tslint": "5.7.0",
-    "typescript": "2.7.2",
+    "typescript": "3.4.1",
     "zone.js": "0.8.20"
   },
   "greenkeeper": {
diff --git a/yarn.lock b/yarn.lock
index fcf8be56..785ef021 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1303,9 +1303,9 @@ tsutils@^2.8.1:
   dependencies:
     tslib "^1.7.1"
 
-typescript@2.7.2:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.7.2.tgz#2d615a1ef4aee4f574425cdff7026edf81919836"
+typescript@3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.1.tgz#b6691be11a881ffa9a05765a205cb7383f3b63c6"
 
 typical@^2.4.2, typical@^2.6.0:
   version "2.6.0"