diff --git a/package.json b/package.json
index 5b3826d..1b6102f 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
   "license": "MIT",
   "devDependencies": {
     "tape": "^4.5.1",
+    "typescript": "^1.8.10",
     "xml-reader": "0.0.6"
   },
   "directories": {