diff --git a/.github/workflows/deploy-docs.yaml b/.github/workflows/deploy-docs.yaml
index 0589642..792221a 100644
--- a/.github/workflows/deploy-docs.yaml
+++ b/.github/workflows/deploy-docs.yaml
@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up Python and uv
         uses: astral-sh/setup-uv@v6
         with:
diff --git a/.github/workflows/release-to-pypi.yaml b/.github/workflows/release-to-pypi.yaml
index 9da3959..8c60e0d 100644
--- a/.github/workflows/release-to-pypi.yaml
+++ b/.github/workflows/release-to-pypi.yaml
@@ -17,7 +17,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Set up Python and uv
         uses: astral-sh/setup-uv@v6
         with:
diff --git a/.github/workflows/run-tests.yaml b/.github/workflows/run-tests.yaml
index 3c2e2e9..0d74c53 100644
--- a/.github/workflows/run-tests.yaml
+++ b/.github/workflows/run-tests.yaml
@@ -25,7 +25,7 @@ jobs:
         os: [ubuntu-latest, macOS-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python and uv
         uses: astral-sh/setup-uv@v6
         with:
@@ -47,7 +47,7 @@ jobs:
         python-version: ["3.13"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python and uv
         uses: astral-sh/setup-uv@v6
         with:
@@ -74,7 +74,7 @@ jobs:
     name: Sphinx Documentation and Test Coverage
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Python and uv
         uses: astral-sh/setup-uv@v6
         with: