diff --git a/.travis.yml b/.travis.yml
index 357a9eeca4..ec897a7c7e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -35,6 +35,7 @@ install:
         liblua5.2-dev ninja-build;
     fi
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then
+      brew update;
       brew install ccache ninja;
     fi
   - |