diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d60a2fd50..f2de5f606 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,6 +31,7 @@ jobs:
         uses: ocaml/setup-ocaml@v2
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
+          dune-cache: true
 
       - run: opam install . --deps-only --with-test
 
@@ -87,6 +88,7 @@ jobs:
         uses: ocaml/setup-ocaml@v2
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
+          dune-cache: true
 
       - run: opam install . --deps-only --with-test
 
@@ -140,6 +142,7 @@ jobs:
         uses: ocaml/setup-ocaml@v2
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
+          dune-cache: true
 
       - run: opam install . --deps-only --with-test