diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 041a337..8c8b164 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,3 +12,5 @@ jobs:
     steps:
     - name: Run Build CI workflow
       uses: adafruit/workflows-circuitpython-libs/build@main
+      with:
+        ignore-bundles: mpy
diff --git a/.github/workflows/release_gh.yml b/.github/workflows/release_gh.yml
index 9acec60..3620ec6 100644
--- a/.github/workflows/release_gh.yml
+++ b/.github/workflows/release_gh.yml
@@ -17,3 +17,4 @@ jobs:
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         upload-url: ${{ github.event.release.upload_url }}
+        ignore-bundles: mpy