diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index ac9e426169e..0f50937a88b 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -24,7 +24,7 @@ jobs:
         run: |
           git clone https://git.sr.ht/~jonsterling/ocaml-forester
           cd ocaml-forester
-          git checkout forester-5.0-dev
+          git checkout 66bba7109d0bb7315c4e5ed503e6945830b7c0d6
           opam pin add -y .
 
       - name: Setup TeX Live