diff --git a/docs/src/main/tut/colophon.md b/docs/src/main/tut/colophon.md
index 2b4998ca8c..76ed9e9a12 100644
--- a/docs/src/main/tut/colophon.md
+++ b/docs/src/main/tut/colophon.md
@@ -14,7 +14,6 @@ and we'd encourage you to check out these projects and consider
 integrating them into your own projects.
 
  * [simulacrum](https://github.com/typelevel/simulacrum) for minimizing type class boilerplate
- * [machinist](https://github.com/typelevel/machinist) for optimizing implicit operators
  * [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