diff --git a/.github/workflows/build-wheels-metal.yaml b/.github/workflows/build-wheels-metal.yaml
index 8e6fb5cb7..176bacf6f 100644
--- a/.github/workflows/build-wheels-metal.yaml
+++ b/.github/workflows/build-wheels-metal.yaml
@@ -48,7 +48,7 @@ jobs:
           # disable repair
           CIBW_REPAIR_WHEEL_COMMAND: ""
           CIBW_ARCHS: "arm64"
-          CIBW_ENVIRONMENT: CMAKE_ARGS="-DCMAKE_OSX_ARCHITECTURES=arm64 -DCMAKE_APPLE_SILICON_PROCESSOR=arm64 -DGGML_METAL=on"
+          CIBW_ENVIRONMENT: CMAKE_ARGS="-DCMAKE_OSX_ARCHITECTURES=arm64 -DCMAKE_APPLE_SILICON_PROCESSOR=arm64 -DGGML_METAL=on -DCMAKE_BUILD_TYPE=Debug"
           CIBW_BUILD: "cp39-* cp310-* cp311-* cp312-*"
         with:
           package-dir: .