diff --git a/.github/workflows/blank.yml b/.github/workflows/blank.yml
index e328b9ead..bcc2a8648 100644
--- a/.github/workflows/blank.yml
+++ b/.github/workflows/blank.yml
@@ -45,6 +45,7 @@ jobs:
       - run: rm -fr runtime32
         if: ${{ matrix.os == 'macos-latest' }}
       - run: opam exec -- dune b
+      - run: opam exec -- dune @install
       - run: opam exec -- dune install
       - run: opam exec -- make regression-all