diff --git a/.github/workflows/macos_mkspecs.yml b/.github/workflows/macos_mkspecs.yml
index 436828d..75845a7 100644
--- a/.github/workflows/macos_mkspecs.yml
+++ b/.github/workflows/macos_mkspecs.yml
@@ -21,3 +21,8 @@ concurrency:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
   cancel-in-progress: true
+
+# Cancel previous in-progress when pushing: https://stackoverflow.com/a/72408109
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true