diff --git a/script/install-deps-osx.sh b/script/install-deps-osx.sh
index c2e0162d8..a0216e9c8 100755
--- a/script/install-deps-osx.sh
+++ b/script/install-deps-osx.sh
@@ -2,4 +2,5 @@
 
 set -x
 
+brew update
 brew install libssh2 cmake