diff --git a/.github/workflows/node-ci.yml b/.github/workflows/node-ci.yml
index 6a681c7..8b0a40c 100644
--- a/.github/workflows/node-ci.yml
+++ b/.github/workflows/node-ci.yml
@@ -105,6 +105,12 @@ jobs:
           install-command: ${{ inputs.install-command }}
           github-packages-token: ${{ secrets.packages-token || github.token }}
 
+      # The vendored actions repo is only needed for setup-node above. Remove it before any
+      # quality command runs so workspace-wide linters/formatters (e.g. `eslint .`, `prettier
+      # --check .`) only ever see the consuming project's own files, never this CI machinery.
+      - name: Remove vendored CI actions before quality checks
+        run: rm -rf .github-workflows
+
       - name: Package check
         if: ${{ inputs.package-check-command != '' }}
         working-directory: ${{ inputs.working-directory }}