diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 16d8365..3283eb8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     name: Lint (ruff)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
@@ -47,7 +47,7 @@ jobs:
             python-version: "3.12"
 
     steps:
-      - 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/release.yml b/.github/workflows/release.yml
index 7e578f3..6d1e4e3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -35,7 +35,7 @@ jobs:
     outputs:
       version: ${{ steps.check.outputs.version }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check version consistency across tag, pyproject.toml, __init__.py
         id: check
@@ -69,7 +69,7 @@ jobs:
     needs: verify-version
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
@@ -92,7 +92,7 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
@@ -154,7 +154,7 @@ jobs:
     permissions:
       contents: write  # Required to create releases
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Download distribution artifacts
         uses: actions/download-artifact@v4