diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b113a59..15b7b7e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -49,7 +49,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # History of 200 should be more than enough to calculate commit count since last release tag.
           fetch-depth: 200
@@ -119,7 +119,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -178,7 +178,7 @@ jobs:
 
       # Checkout is required for the next `gh release delete` step
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: main
 
diff --git a/.github/workflows/python-code-format.yml b/.github/workflows/python-code-format.yml
index 03d6163..9d1a8a9 100644
--- a/.github/workflows/python-code-format.yml
+++ b/.github/workflows/python-code-format.yml
@@ -23,7 +23,7 @@ jobs:
 
     name: Check Python code formatting
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6