diff --git a/macosx/brew-deps.sh b/macosx/brew-deps.sh
index fb236b7..5f9c7b5 100755
--- a/macosx/brew-deps.sh
+++ b/macosx/brew-deps.sh
@@ -31,8 +31,10 @@ install()
 #
 deps()
 {
+    brew unlink python
     brew update
     brew update
+    brew upgrade
     brew reinstall tmux
     brew reinstall protobuf
 }