diff --git a/.github/workflows/cmake_ci.yml b/.github/workflows/cmake_ci.yml
index 78fe9f3e..6eb82716 100644
--- a/.github/workflows/cmake_ci.yml
+++ b/.github/workflows/cmake_ci.yml
@@ -66,5 +66,7 @@ jobs:
             MACOSX_DEPLOYMENT_TARGET=13
           CIBW_CONFIG_SETTINGS: >
             cmake.define.CMAKE_BUILD_TYPE=${{ matrix.build_type }}
+            cmake.define.CMAKE_C_COMPILER=${{ matrix.c_compiler }}
+            cmake.define.CMAKE_CXX_COMPILER=${{ matrix.cxx_compiler }}
             cmake.define.FINUFFT_ARCH_FLAGS=${{ matrix.arch_flags }}
             cmake.define.FINUFFT_USE_DUCC0=${{ matrix.ducc_fft }}