diff --git a/.github/workflows/auto-format.yml b/.github/workflows/auto-format.yml
index 727824e..0ade705 100644
--- a/.github/workflows/auto-format.yml
+++ b/.github/workflows/auto-format.yml
@@ -26,6 +26,7 @@ jobs:
       - uses: r-lib/actions/setup-r@v2
       - uses: r-lib/actions/setup-r-dependencies@v2
         with:
+          extra-packages: local::.
           needs: Suggests
 
       - name: render README.Rmd