diff --git a/tools/package.json b/tools/package.json
index 25dadcd4..da85b645 100644
--- a/tools/package.json
+++ b/tools/package.json
@@ -1,6 +1,6 @@
 {
   "name": "grpc-tools",
-  "version": "0.14.0",
+  "version": "0.14.1-pre1",
   "author": "Google Inc.",
   "description": "Tools for developing with gRPC on Node.js",
   "homepage": "http://www.grpc.io/",