diff --git a/.travis.yml b/.travis.yml
index e3182569c4213e91fc4edb7affd6338d7603d44c..08ab126c7fa20ce7ae33bbd46cbb87b55412e863 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -241,7 +241,7 @@ before_install:
         brew update
         brew outdated boost || brew upgrade boost
         brew outdated cmake || brew upgrade cmake
-        brew install lcov homebrew/science/opencv
+        brew install lcov xpath homebrew/science/opencv
       fi
     - gem install coveralls-lcov
     - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi