diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 25acd29..d54bfcd 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
       - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b
       - name: Build
         run: nix-shell --pure --run 'make SPHINXOPTS='-W' html'