diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4454984..cdb091e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     steps:
       - name: Checkout
         # actions/checkout v4, pinned to a full commit SHA.
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0
         with:
           persist-credentials: false
       - name: Dependency pinning