diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3640a25c508..4bfc4851b1d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -363,6 +363,7 @@ jobs:
           brew install mariadb zeromq zmq luajit llvm@18
       - name: Configure CMake
         run: |
+          export CXX = /usr/local/opt/llvm/lib/c++
           mkdir -p build
           cmake -S . -B build
       - name: Build