diff --git a/tools/package.json b/tools/package.json
index a171e253..321e3c3e 100644
--- a/tools/package.json
+++ b/tools/package.json
@@ -1,6 +1,6 @@
 {
   "name": "grpc-tools",
-  "version": "0.14.1",
+  "version": "0.14.2-pre1",
   "author": "Google Inc.",
   "description": "Tools for developing with gRPC on Node.js",
   "homepage": "http://www.grpc.io/",