diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 2e2db0b..55947e2 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -20,6 +20,7 @@ jobs:
       # Switches to enable compatibility with older versions of macOS.
       SYSTEM_VERSION_COMPAT: 1
       MACOSX_DEPLOYMENT_TARGET: 10.16
+      _PYTHON_HOST_PLATFORM: macosx-11-x86_64
 
     steps: