diff --git a/docs/colophon.md b/docs/colophon.md
index 070b7874e2..5b41227fb5 100644
--- a/docs/colophon.md
+++ b/docs/colophon.md
@@ -12,7 +12,7 @@ integrating them into your own projects.
  * [scalacheck](http://scalacheck.org) for property-based testing
  * [discipline](https://github.com/typelevel/discipline) for encoding and testing laws
  * [kind-projector](https://github.com/typelevel/kind-projector) for type lambda syntax
- * [tut](https://github.com/tpolecat/tut) type-checked example code makes sure that our examples stay in sync with the rest of our source
+ * [mdoc](https://github.com/scalameta/mdoc) type-checked example code makes sure that our examples stay in sync with the rest of our source
 
 There are other libraries that aim to foster Functional Programming in the Scala programming language which Cats has a relationship to: