diff --git a/cpp/Brewfile b/cpp/Brewfile
index 7de6c7deabe..24bab039443 100644
--- a/cpp/Brewfile
+++ b/cpp/Brewfile
@@ -25,8 +25,8 @@ brew "flatbuffers"
 brew "git"
 brew "glog"
 brew "grpc"
-brew "llvm"
 brew "llvm@8"
+brew "llvm@9"
 brew "lz4"
 brew "minio"
 brew "ninja"