diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 164e6e754..f05122757 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,6 +21,8 @@ jobs:
     - uses: ocaml/setup-ocaml@v2
       with:
         ocaml-compiler: ${{ matrix.ocaml-compiler }}
+        dune-cache: true
+        allow-prerelease-opam: true
     - run: opam pin -n .
     - run: opam depext -yt zipperposition
     - run: opam install -t . --deps-only