diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 3b9d676b7..c1d5b4907 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -119,6 +119,8 @@ jobs:
           - { target: macos-14, config: pam }
           - { target: macos-15, config: pam }
     runs-on: ${{ matrix.target }}
+    env:
+      EPHEMERAL_VM: yes
     steps:
     - name: check RUN_ONLY_TARGET_CONFIG
       if: vars.RUN_ONLY_TARGET_CONFIG != ''