diff --git a/.github/workflows/build-and-deploy-on-pypi.yml b/.github/workflows/build-and-deploy-on-pypi.yml
index 4e53d80..44d1b69 100644
--- a/.github/workflows/build-and-deploy-on-pypi.yml
+++ b/.github/workflows/build-and-deploy-on-pypi.yml
@@ -19,7 +19,7 @@ jobs:
       # IMPORTANT: this permission is mandatory for trusted publishing
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Python 3.14
diff --git a/.github/workflows/joss-draft-pdf.yml b/.github/workflows/joss-draft-pdf.yml
index 87f7486..f8959da 100644
--- a/.github/workflows/joss-draft-pdf.yml
+++ b/.github/workflows/joss-draft-pdf.yml
@@ -17,7 +17,7 @@ jobs:
     name: Paper Draft
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Build draft PDF
         uses: openjournals/openjournals-draft-action@master
         with:
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index fdabada..876e36b 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -29,7 +29,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: conda-incubator/setup-miniconda@v3