diff --git a/.github/workflows/ocaml-lsp-compat.yml b/.github/workflows/ocaml-lsp-compat.yml
index 8b6755b72..6c0e05a8a 100644
--- a/.github/workflows/ocaml-lsp-compat.yml
+++ b/.github/workflows/ocaml-lsp-compat.yml
@@ -53,6 +53,6 @@ jobs:
         run: |
           opam depext conf-jq # opam depext bug
           opam --cli=2.1 pin --with-version=dev --no-action https://github.com/voodoos/ocaml-lsp.git#5.2-preview
-          opam --cli=2.1 pin --with-version=dev --no-action .
+          opam --cli=2.1 pin --with-version=5.0-502 --no-action .
           opam install ocaml-lsp-server --with-test --ignore-constraints-on=ocamlformat