diff --git a/.travis.yml b/.travis.yml
index c2e3b03..2d47e4a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,4 +15,5 @@ before_install:
   - brew update
   - brew install ragel
   - brew install cmake
+  - brew install "https://github.com/ksherlock/lemon--/raw/master/lemon%2B%2B.rb"