diff --git a/README.md b/README.md
index 1a187ca8..53ee51bc 100644
--- a/README.md
+++ b/README.md
@@ -2212,6 +2212,7 @@ _Libraries for testing codebases and generating test data._
   - [covergates](https://github.com/covergates/covergates) - Self-hosted code coverage report review and management service.
   - [cupaloy](https://github.com/bradleyjkemp/cupaloy) - Simple snapshot testing addon for your test framework.
   - [dbcleaner](https://github.com/khaiql/dbcleaner) - Clean database for testing purpose, inspired by `database_cleaner` in Ruby.
+  - [diff](https://github.com/terrastruct/diff) - Beautiful Git-style diffs to easily compare expected vs actual.
   - [dsunit](https://github.com/viant/dsunit) - Datastore testing for SQL, NoSQL, structured files.
   - [embedded-postgres](https://github.com/fergusstrange/embedded-postgres) - Run a real Postgres database locally on Linux, OSX or Windows as part of another Go application or test.
   - [endly](https://github.com/viant/endly) - Declarative end to end functional testing.