diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8f8f66a..26dcb3e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Set-up OCaml
         uses: ocaml/setup-ocaml@v2
         with:
-          ocaml-compiler: "ocaml-variants.5.2.0+options,ocaml-option-musl,ocaml-option-static"
+          ocaml-compiler: "ocaml-variants.5.1.1+options,ocaml-option-static"
 
       - run: opam install . --deps-only --with-test