diff --git a/README.md b/README.md
index 023cdbd..63f9c58 100644
--- a/README.md
+++ b/README.md
@@ -236,6 +236,7 @@ Services to securely store your Docker images.
 
 ## Image Builder
 * [bocker](https://github.com/icy/bocker) (2) - Write Dockerfile completely in Bash. Extensible and simple. --> Reusable by [@icy](https://github.com/icy)
+* [box](https://github.com/box-builder/box) - Build Dockerfile images with a mruby DSL, includes flattening and layer manipulation
 * [container-factory](https://github.com/lsqio/container-factory) - Produces Docker images from tarballs of application source code by [@lsqio](https://github.com/lsqio)
 * [dlayer](https://github.com/wercker/dlayer) - Stats collector for Docker layers by [@wercker](https://github.com/wercker)
 * [docker-companion](https://github.com/mudler/docker-companion) - A command line tool written in Golang to squash and unpack docker images by [@mudler](https://github.com/mudler/)