diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 0b8561eb..da021321 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -73,3 +73,4 @@ jobs:
         uses: ./actions/run-many
         with:
           target: ${{ matrix.target }}
+          parallel: 1