diff --git a/.github/workflows/bump-version.yml b/.github/workflows/bump-version.yml
index 50c4e5c..235b266 100644
--- a/.github/workflows/bump-version.yml
+++ b/.github/workflows/bump-version.yml
@@ -13,7 +13,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fbd974a..70ae265 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -71,7 +71,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v6
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index ea662c0..450dddb 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -10,7 +10,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v6
         with:
           python-version: '3.11'
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 40d7ddd..9d09029 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - name: Set up Python
diff --git a/.github/workflows/sphinx-docs.yaml b/.github/workflows/sphinx-docs.yaml
index 8a8bd2c..b3d14c2 100644
--- a/.github/workflows/sphinx-docs.yaml
+++ b/.github/workflows/sphinx-docs.yaml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout package repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v6
@@ -45,7 +45,7 @@ jobs:
         run: poetry run sphinx-build -b html -c docs/gh_conf docs/source docs/build
 
       - name: Checkout blog repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: ${{ env.BLOG_REPO }}
           token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}