diff --git a/package.json b/package.json
index d02d96e..5f28fdb 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,6 @@
     "tslint-config-ikatyang": "2.2.0",
     "tslint-config-prettier-ext": "1.5.0",
     "tslint-plugin-prettier": "1.1.0",
-    "typescript": "2.4.2"
+    "typescript": "2.5.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 1562e6f..d5eb4b1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2478,9 +2478,9 @@ type-detect@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-1.0.0.tgz#762217cc06db258ec48908a1298e8b95121e8ea2"
 
-typescript@2.4.2:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.2.tgz#f8395f85d459276067c988aa41837a8f82870844"
+typescript@2.5.1:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.5.1.tgz#ce7cc93ada3de19475cc9d17e3adea7aee1832aa"
 
 uglify-js@^2.6:
   version "2.8.29"