diff --git a/travis_custom/custom_before_install_osx.sh b/travis_custom/custom_before_install_osx.sh
index e6015a00656ab08d8b7fbb006aa7d43eb08f85e7..b2d8bb1153c3c8a083f8aad1548a883c0c225df0 100755
--- a/travis_custom/custom_before_install_osx.sh
+++ b/travis_custom/custom_before_install_osx.sh
@@ -1,3 +1,5 @@
+brew update
+
 # Add gepetto tap
 brew tap gepetto/homebrew-gepetto