diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 84a8260647..7329fd5f06 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -58,7 +58,7 @@ jobs:
             skip-test: false
             skip-doc: true
           - os: windows-latest
-            ocaml-compiler: ocaml.5.2.0,ocaml-option-mingw
+            ocaml-compiler: "5.2"
             skip-effects: false
             skip-test: false
             skip-doc: true
@@ -66,15 +66,10 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - name: Set git to use LF
-        if: runner.ocaml-compiler < 5.2
-        run: |
-          git config --global core.autocrlf false
-          git config --global core.eol lf
-          git config --global core.ignorecase false
-
       - name: Checkout tree
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Set-up Node.js
         uses: actions/setup-node@v4
@@ -82,27 +77,14 @@ jobs:
           node-version: lts/*
 
       - name: Set-up OCaml ${{ matrix.ocaml-compiler }}
-        if: runner.os == 'Windows'
-        uses: ocaml/setup-ocaml@v2
-        with:
-          ocaml-compiler: ${{ matrix.ocaml-compiler }}
-          opam-repositories: |
-            dra27: https://github.com/dra27/opam-repository.git#windows-5.0
-            default: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset
-            opam: https://github.com/ocaml/opam-repository.git
-          dune-cache: true
-          opam-depext: ${{ !matrix.skip-test }}
-          opam-depext-flags: --with-test
-
-      - name: Set-up OCaml ${{ matrix.ocaml-compiler }}
-        if: runner.os != 'Windows'
-        uses: ocaml/setup-ocaml@v2
+        uses: ocaml/setup-ocaml@v3.0.0-alpha
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
           allow-prerelease-opam: true
           dune-cache: true
-          opam-depext: ${{ !matrix.skip-test }}
-          opam-depext-flags: --with-test
+          opam-repositories: |
+            hhugo: git+https://github.com/hhugo/opam-repository.git#gmp-mingw
+            default: git+https://github.com/ocaml/opam-repository.git
 
       - run: opam install . --best-effort
         if: ${{ matrix.skip-test }}
@@ -144,13 +126,13 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set-up OCaml
-        uses: ocaml/setup-ocaml@v2
+        uses: ocaml/setup-ocaml@v3.0.0-alpha
         with:
           ocaml-compiler: "5.2"
           allow-prerelease-opam: true
           dune-cache: true
 
-      - uses: ocaml/setup-ocaml/lint-opam@v2
+      - uses: ocaml/setup-ocaml/lint-opam@v3.0.0-alpha
         continue-on-error: true
 
   lint-fmt:
@@ -160,10 +142,10 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set-up OCaml
-        uses: ocaml/setup-ocaml@v2
+        uses: ocaml/setup-ocaml@v3.0.0-alpha
         with:
           ocaml-compiler: "5.2"
           allow-prerelease-opam: true
           dune-cache: true
 
-      - uses: ocaml/setup-ocaml/lint-fmt@v2
+      - uses: ocaml/setup-ocaml/lint-fmt@v3.0.0-alpha