diff --git a/.github/workflows/ocaml.yaml b/.github/workflows/ocaml.yaml
index b06ee50..98dbefa 100644
--- a/.github/workflows/ocaml.yaml
+++ b/.github/workflows/ocaml.yaml
@@ -13,7 +13,7 @@ jobs:
             with-doc: false
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: RedPRL/actions-ocaml@v2
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}