diff --git a/package.json b/package.json
index e1ba929..3830b1c 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,6 @@
     "mocha": "^5.1.1",
     "nyc": "^13.0.0",
     "source-map-support": "^0.5.6",
-    "typescript": "~3.0.0"
+    "typescript": "~3.1.0"
   }
 }