diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7cb97b7..0c431ab 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,35 +27,35 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        - name: Windows
-          uses: windows-latest
-          ocaml:
-            ocaml-compiler: ocaml-variants.5.1.1+options,ocaml-option-mingw
-            # Copied from https://github.com/ocaml-multicore/eio/blob/main/.github/workflows/main.yml
-            opam-depext: false
-            opam-repositories: |
-              dra27: https://github.com/dra27/opam-repository.git#windows-5.0
-              normal: https://github.com/ocaml/opam-repository.git
-          input-file: illuaminate.exe
-          output-file: illuaminate-windows-x86_64.exe
-          dune-flags:
+        # - name: Windows
+        #   uses: windows-latest
+        #   ocaml:
+        #     ocaml-compiler: ocaml-variants.5.1.1+options,ocaml-option-mingw
+        #     # Copied from https://github.com/ocaml-multicore/eio/blob/main/.github/workflows/main.yml
+        #     opam-depext: false
+        #     opam-repositories: |
+        #       dra27: https://github.com/dra27/opam-repository.git#windows-5.0
+        #       normal: https://github.com/ocaml/opam-repository.git
+        #   input-file: illuaminate.exe
+        #   output-file: illuaminate-windows-x86_64.exe
+        #   dune-flags:
 
         - name: Linux
           uses: ubuntu-latest
           # We don't use flambda as that ends up much buliker than without.
-          ocaml:
-            ocaml-compiler: ocaml-variants.5.1.1+options,ocaml-option-musl
-          input-file: illuaminate
-          output-file: illuaminate-linux-x86_64
-          dune-flags: --workspace dune-workspace.release
-
-        - name: macOS
-          uses: macos-latest
           ocaml:
             ocaml-compiler: "5.1.1"
           input-file: illuaminate
-          output-file: illuaminate-macos-x86_64
-          dune-flags:
+          output-file: illuaminate-linux-x86_64
+          dune-flags: # --workspace dune-workspace.release
+
+        # - name: macOS
+        #   uses: macos-latest
+        #   ocaml:
+        #     ocaml-compiler: "5.1.1"
+        #   input-file: illuaminate
+        #   output-file: illuaminate-macos-x86_64
+        #   dune-flags:
 
     name: Build ${{ matrix.name }}
     runs-on: ${{ matrix.uses }}