diff --git a/.github/workflows/build-wasm_of_ocaml.yml b/.github/workflows/build-wasm_of_ocaml.yml
index a45ed158cd..d0ffb50c38 100644
--- a/.github/workflows/build-wasm_of_ocaml.yml
+++ b/.github/workflows/build-wasm_of_ocaml.yml
@@ -94,7 +94,7 @@ jobs:
       # Work-around a race between reinstalling mingw-w64-shims
       # (because of conf-pkg-config optional dep) and installing other
       # packages that implicitly depend on mingw-w64-shims.
-      - run: opam install conf-pkg-config
+      - run: opam install conf-pkg-config conf-mingw-w64-gcc-i686
         if: runner.os == 'Windows'
         
       - name: Pin dune