diff --git a/.github/workflows/sandwich.yml b/.github/workflows/sandwich.yml
index c27694d0..8d595985 100644
--- a/.github/workflows/sandwich.yml
+++ b/.github/workflows/sandwich.yml
@@ -66,8 +66,9 @@ jobs:
 
     - name: Build
       run: |
-        export LDFLAGS="-L/opt/homebrew/opt/llvm@13/lib"
-        export CPPFLAGS="-I/opt/homebrew/opt/llvm@13/include"
+        C_INCLUDE_PATH="`xcrun --show-sdk-path`/usr/include/ffi"
+        # export LDFLAGS="-L/opt/homebrew/opt/llvm@13/lib"
+        # export CPPFLAGS="-I/opt/homebrew/opt/llvm@13/include"
         cabal configure --enable-tests --enable-benchmarks --test-show-details=direct
         cabal build all