diff --git a/.github/workflows/blank.yml b/.github/workflows/blank.yml
index 4e2ced1a9..629bba6a9 100644
--- a/.github/workflows/blank.yml
+++ b/.github/workflows/blank.yml
@@ -45,6 +45,10 @@ jobs:
       - run: rm -fr runtime32
         if: ${{ matrix.os == 'macos-latest' }}
       - run: opam exec -- dune b
+      - run: opam exec -- dune b src runtime runtime32 stdlib tutorial
+        if: ${{ matrix.os != 'macos-latest' }}
+      - run: opam exec -- dune b src runtime stdlib tutorial
+        if: ${{ matrix.os == 'macos-latest' }}
       - run: opam exec -- dune b @install --profile=release
       - run: opam exec -- dune    install --profile=release
       - run: opam exec -- make regression-all