diff --git a/.github/workflows/test_build.yml b/.github/workflows/test_build.yml
index 902efd90b4..9a8858f870 100644
--- a/.github/workflows/test_build.yml
+++ b/.github/workflows/test_build.yml
@@ -45,7 +45,7 @@ jobs:
         include:
           # This build tests Clang rather than AppleClang (keep)
           - build-system: cmake
-            os: macos-14
+            os: macos-13 # TODO: switch to macos-14 for arm64 testing
             compiler: clang-15
             cxx: clang++
             cc: clang