diff --git a/readme.markdown b/readme.markdown
index faf426d1..4260a29d 100644
--- a/readme.markdown
+++ b/readme.markdown
@@ -128,6 +128,7 @@ By default, uncaught exceptions in your tests will not be intercepted, and will
 - CoffeeScript support with https://www.npmjs.com/package/coffeetape
 - Promise support with https://www.npmjs.com/package/blue-tape
 - ES6 support with https://www.npmjs.com/package/babel-tape-runner
+- Concurrency support with https://github.com/imsnif/mixed-tape
 
 # methods