diff --git a/.github/workflows/aste_ci_mac.yml b/.github/workflows/aste_ci_mac.yml
index 718ec307..9a6ba969 100644
--- a/.github/workflows/aste_ci_mac.yml
+++ b/.github/workflows/aste_ci_mac.yml
@@ -70,4 +70,4 @@ jobs:
         working-directory: build
         run: |
           source ${{ env.VIRTUAL_ENV }}/bin/activate
-          ctest
+          ctest -E mapping_tester_serial # see #212