diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 00b2021b7..4cd587c7e 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -56,7 +56,7 @@ jobs:
         include:
           - os: windows-latest
             ocaml-compiler: ocaml-variants.5.2.0+options,ocaml-option-mingw
-            allow-prerelease-opam: false
+            allow-prerelease-opam: true
             opam-repositories: |
               windows-5.0: https://github.com/dra27/opam-repository.git#windows-5.0
               sunset: https://github.com/ocaml-opam/opam-repository-mingw.git#sunset