diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a15262d..7f79af0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,6 +29,6 @@ jobs:
     - run: opam pin -n .
     - run: opam depext -yt iter
     - run: opam install -t . --deps-only
-    - run: opam exec -- dune build
+    - run: opam exec -- dune build @install
     - run: opam exec -- dune runtest
       if: ${{ matrix.os == 'ubuntu-latest'}}