diff --git a/content/posts/newsletter-013/index.md b/content/posts/newsletter-013/index.md
index cf4d3797f..4e6fb3c32 100644
--- a/content/posts/newsletter-013/index.md
+++ b/content/posts/newsletter-013/index.md
@@ -184,6 +184,23 @@ are common in games. While fully functional, the code is still in an early
 state and any suggestions for improvements - especially on how best to
 integrate it with the existing ecosystem - are greatly appreciated.
 
+### Tetra
+
+[Tetra] is a simple 2D game framework, inspired by XNA and Raylib. This month,
+versions [0.4.1][tetra-041] and [0.4.2][tetra-042] were released, featuring:
+
+- Improved Serde support
+- Various fixes and improvements to the built-in `Camera` type
+- Many documentation improvements, based on user feedback
+
+In addition, Tetra 0.5 is planned for release in early September. For more
+information on the upcoming changes, see the [changelog][tetra-changelog].
+
+[tetra]: https://github.com/17cupsofcoffee/tetra
+[tetra-041]: https://twitter.com/17cupsofcoffee/status/1289857217198317568
+[tetra-042]: https://twitter.com/17cupsofcoffee/status/1294316642680426497
+[tetra-changelog]: https://github.com/17cupsofcoffee/tetra/blob/main/CHANGELOG.md
+
 ## Popular Workgroup Issues in Github
 
 ## Meeting Minutes