diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 89c7106..ded36a4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
       # Actions pinned by commit SHA (not mutable tags) so a compromised tag
       # can't inject code into CI.
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5