diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 202de77..7015e77 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
   format-python:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: psf/black@stable
@@ -35,7 +35,7 @@ jobs:
   ruff-check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: astral-sh/ruff-action@v3
@@ -45,7 +45,7 @@ jobs:
       COLUMNS: 120
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: pre-commit/action@v3.0.1
@@ -53,7 +53,7 @@ jobs:
   mypy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: astral-sh/setup-uv@v7
@@ -74,7 +74,7 @@ jobs:
   dependencies:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: astral-sh/setup-uv@v7
@@ -112,7 +112,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: test-${{ matrix.python-version }}-${{ matrix.resolution }}-${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: set mock environment variables
@@ -159,7 +159,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: astral-sh/setup-uv@v7
diff --git a/.github/workflows/weekly-ci.yml b/.github/workflows/weekly-ci.yml
index 5598524..157b51e 100644
--- a/.github/workflows/weekly-ci.yml
+++ b/.github/workflows/weekly-ci.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: set mock environment variables
@@ -96,7 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: astral-sh/setup-uv@v7