diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml
index 564a588..1590643 100644
--- a/.github/workflows/mkdocs.yml
+++ b/.github/workflows/mkdocs.yml
@@ -29,7 +29,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: "refs/pull/${{ github.event.number }}/merge"
 
@@ -89,7 +89,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 4003dc7..ba3cf9e 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -19,7 +19,7 @@ jobs:
       contents: write
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install system packages
         run: |
diff --git a/.github/workflows/time-reporting.yml b/.github/workflows/time-reporting.yml
index c3bd7d3..2936656 100644
--- a/.github/workflows/time-reporting.yml
+++ b/.github/workflows/time-reporting.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5