diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b69859b..1c18056 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index c6a4935..bf0a5b5 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -32,7 +32,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up oldest tested Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/supply-chain.yml b/.github/workflows/supply-chain.yml
index a5ee352..02e7c3b 100644
--- a/.github/workflows/supply-chain.yml
+++ b/.github/workflows/supply-chain.yml
@@ -32,7 +32,7 @@ jobs:
           - '3.14'
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
       with:
         # This enables supply chain review against only a selected
         # branch.  For those using the "Git-Flow" style of branching,