diff --git a/.travis.yml b/.travis.yml
index b421d14a45ac9892b2f8af9d89e1944f2d948017..f27bdce3198711f88bf3c7c6f521c8b722f6447b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -77,13 +77,14 @@ matrix:
       compiler: clang
       addons:
         homebrew:
-          taps: homebrew/science
           update: true
           packages:
-            - git
-            - cmake
+            - git # build
+            - doxygen # build
+            - cmake # build
+            - pkg-config # build
             - boost
-            - libccd
+            - brewsci/homebrew-science/cddlib
             - assimp
             - eigen
             - octomap