diff --git a/.travis.yml b/.travis.yml
index 180cb77d..9afeb4d9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ matrix:
     - os: osx
       osx_image: xcode8
       env:
-       - MATRIX_EVAL="brew install gcc && CC=gcc-7 && CXX=g++-7"
+       - MATRIX_EVAL="brew update && brew install gcc && CC=gcc-7 && CXX=g++-7"
 
     # Linux / Clang
     - os: linux