diff --git a/.github/workflows/size.yml b/.github/workflows/size.yml
index 6cce971..ec18776 100644
--- a/.github/workflows/size.yml
+++ b/.github/workflows/size.yml
@@ -11,3 +11,4 @@ jobs:
       - uses: preactjs/compressed-size-action@v2
         with:
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          build-script: "build:prod"