diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -496,6 +496,7 @@ Services to securely store your Docker images.
 
 ### Testing
 
+* [Container Structure Test](https://github.com/GoogleCloudPlatform/container-structure-test) - A framework to validate the structure of an image by checking the outputs of commands or the contents of the filesystem. By [@GoogleCloudPlatform](https://github.com/GoogleCloudPlatform)
 * [dgoss](https://github.com/aelsabbahy/goss/tree/master/extras/dgoss) - A fast YAML based tool for validating docker containers.
 * [Dockunit](https://github.com/dockunit/platform) :skull: - Docker based integration tests. A simple Node based utility for running Docker based unit tests. By [@dockunit](https://github.com/dockunit)
 * [DockerSpec](https://github.com/zuazo/dockerspec) - A small Ruby Gem to run RSpec and Serverspec, Infrataster and Capybara tests against Dockerfiles or Docker images easily. By [@zuazo](https://github.com/zuazo)