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@@ -258,7 +258,6 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 
 *Libraries for preprocessing CSS files.*
 
-* [c6](https://github.com/c9s/c6) - High performance SASS compatible-implementation compiler written in Go.
 * [gcss](https://github.com/yosssi/gcss) - Pure Go CSS Preprocessor.
 * [go-libsass](https://github.com/wellington/go-libsass) - Go wrapper to the 100% Sass compatible libsass project.