diff --git a/.travis.yml b/.travis.yml
index 26f14e7..c996029 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,6 +21,7 @@ addons:
     - cmake
 
 before_install:
+  - if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then brew update; fi
   - if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then brew install ccache; fi
 
 script: