diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2e96635..6f766df 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,5 +27,5 @@ jobs:
     - run: opam pin -n .
     - run: opam depext -yt ezcurl ezcurl-lwt
     - run: opam install -t . --deps-only
-    - run: opam exec -- dune build
+    - run: opam exec -- dune build @install
     - run: opam exec -- dune runtest