diff --git a/package.json b/package.json
index 8c4a4b4..564d2ee 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,6 @@
     "ts-node": "3.2.0",
     "tslint": "5.5.0",
     "tslint-config-ikatyang": "0.10.0",
-    "typescript": "2.4.1"
+    "typescript": "2.4.2"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 7ea21be..ba31250 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2434,9 +2434,9 @@ type-detect@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-1.0.0.tgz#762217cc06db258ec48908a1298e8b95121e8ea2"
 
-typescript@2.4.1:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.1.tgz#c3ccb16ddaa0b2314de031e7e6fee89e5ba346bc"
+typescript@2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.2.tgz#f8395f85d459276067c988aa41837a8f82870844"
 
 uglify-js@^2.6:
   version "2.8.29"