diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 35be3ef6..64bd361e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -21,8 +21,8 @@ jobs:
       - name: Setup anew (or from cache) vcpkg (and does not build any package)
         uses: lukka/run-vcpkg@v11
         env:
-          VCPKG_DEFAULT_TRIPLET: x64-windows-static
-          VCPKG_DEFAULT_HOST_TRIPLET: x64-windows-static
+          VCPKG_DEFAULT_TRIPLET: x64-mingw-static
+          VCPKG_DEFAULT_HOST_TRIPLET: x64-mingw-static
         with:
           runVcpkgInstall: true
           runVcpkgFormatString: '["install", "--clean-after-build"]'
@@ -41,16 +41,13 @@ jobs:
         run: |
           echo "PKG_CONFIG_PATH=${GITHUB_WORKSPACE}\vcpkg_installed\\${VCPKG_DEFAULT_TRIPLET}\lib\pkgconfig" >> $GITHUB_ENV
 
-      - shell: cmd
-        run: tree /f /a D:\a\odiff\odiff\vcpkg_installed
-
       - run: |
           choco install pkgconfiglite
 
       - shell: bash
         run: |
-          echo "LIBPNG_CFLAGS=-ID:/a/odiff/odiff/vcpkg_installed/x64-windows-static/include " >> $GITHUB_ENV
-          echo "LIBPNG_LIBS='-LD:/a/odiff/odiff/vcpkg_installed/x64-windows-static/lib -lspng_static -lzlib'" >> $GITHUB_ENV
+          echo "LIBPNG_CFLAGS=$(pkg-config --cflags libspng_static)" >> $GITHUB_ENV
+          echo "LIBPNG_LIBS=$(pkg-config --libs libspng_static)" >> $GITHUB_ENV
           echo "LIBTIFF_LIBS=$(pkg-config --libs libtiff-4)" >> $GITHUB_ENV
           echo "LIBTIFF_CFLAGS=$(pkg-config --cflags libtiff-4)" >> $GITHUB_ENV
           echo "LIBJPEG_CFLAGS=$(pkg-config --cflags libturbojpeg)" >> $GITHUB_ENV
@@ -58,7 +55,9 @@ jobs:
 
       - uses: ocaml/setup-ocaml@v3
         with:
-          ocaml-compiler: 4.14.0
+          opam-repositories: "default:https://github.com/fdopen/opam-repository-mingw.git#opam2"
+          ocaml-compiler: "ocaml-variants.4.07.1+mingw64"
+          opam-disable-sandboxing: true
           dune-cache: true
 
       - name: Install deps & build