diff --git a/README.md b/README.md
index e334a7a..81a5960 100644
--- a/README.md
+++ b/README.md
@@ -2295,6 +2295,7 @@ See also [Infrastructure](#infrastructure)
 * [Yevgeniy Brikman](https://blog.gruntwork.io/terraform-tips-tricks-loops-if-statements-and-gotchas-f739bbae55f9) - (2016) Terraform tips & tricks: loops, if-statements, and gotchas
 * [terraform-best-practices](https://github.com/ozbillwang/terraform-best-practices) - Terraform Best Practices for AWS users
 * [Dave Kerr](https://dwmkerr.com/dynamic-and-configurable-availability-zones-in-terraform/) - (2019) Dynamic and Configurable Availability Zones in Terraform
+* [Terratest](https://terratest.gruntwork.io/) - is a Go library that provides patterns and helper functions for testing infrastructure, with 1st-class support for Terraform, Packer, Docker, Kubernetes, AWS, GCP, and more.
 
 ## Travis CI
 * [Tavis CI Docs](https://docs.travis-ci.com/user/common-build-problems/#Troubleshooting-Locally-in-a-Docker-Image) - Troubleshooting Locally in a Docker Image, useful if you have troubles with travis CI
@@ -6735,6 +6736,7 @@ See also [Dotfiles / Aliases](#dotfiles--aliases)
 * [Gilles Scokart](https://fr.slideshare.net/gscokart/stop-testing-start-designing) - [Slides] (2016) Stop testing start designing
 * [Jeff Geerling](https://www.jeffgeerling.com/blog/2017/dockrun-oneshot-quick-local-environments) - (2017) dockrun oneshot — quick local environments for testing infrastructure
 * [localstack/localstack](https://github.com/localstack/localstack) - 💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline
+* [Terratest](https://terratest.gruntwork.io/) - is a Go library that provides patterns and helper functions for testing infrastructure, with 1st-class support for Terraform, Packer, Docker, Kubernetes, AWS, GCP, and more.
 
 # Transportation :train2: :oncoming_automobile:
 > Learn