diff --git a/.travis.yml b/.travis.yml
index 1cf37e2d6..6f6c98807 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,6 +30,12 @@ matrix:
     - env: Cmd="make gnu90build && make clean && make test && make clean && make cmakebuild && make travis-install"
       os: osx
 
+before_install:
+  - if [ `uname` = "Darwin" ]; then brew update; fi
+
+install:
+  - if [ `uname` = "Darwin" ]; then brew install xz; fi
+
 git:
   depth: 1