diff --git a/package.json b/package.json
index f4d902c58..8f6aa3c11 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "scripts/",
     "src/",
     "deps/",
+    "third_party/",
     "typings/"
   ],
   "homepage": "https://github.com/microsoft/node-pty",