diff --git a/.travis.yml b/.travis.yml
index 244873472e..cd681ed016 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -48,6 +48,7 @@ addons:
       - valgrind
       - zlib1g-dev
   homebrew:
+    update: true
     packages:
       - gdbm
       - gmp