diff --git a/package.json b/package.json
index ccb0e2e..2be54ef 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "tslint": "5.11.0",
     "tslint-config-prettier": "1.16.0",
     "tslint-config-standard": "8.0.1",
-    "typescript": "3.1.6"
+    "typescript": "3.4.3"
   },
   "husky": {
     "hooks": {
diff --git a/yarn.lock b/yarn.lock
index 6bd421c..d46dcce 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5021,10 +5021,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.1.6:
-  version "3.1.6"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.6.tgz#b6543a83cfc8c2befb3f4c8fba6896f5b0c9be68"
-  integrity sha512-tDMYfVtvpb96msS1lDX9MEdHrW4yOuZ4Kdc4Him9oU796XldPYF/t2+uKoX0BBa0hXXwDlqYQbXY5Rzjzc5hBA==
+typescript@3.4.3:
+  version "3.4.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.4.3.tgz#0eb320e4ace9b10eadf5bc6103286b0f8b7c224f"
+  integrity sha512-FFgHdPt4T/duxx6Ndf7hwgMZZjZpB+U0nMNGVCYPq0rEzWKjEDobm4J6yb3CS7naZ0yURFqdw9Gwc7UOh/P9oQ==
 
 uglify-js@^3.1.4:
   version "3.4.9"