diff --git a/.github/workflows/flake8.yml b/.github/workflows/flake8.yml
index 1c03f58..b13bdc0 100644
--- a/.github/workflows/flake8.yml
+++ b/.github/workflows/flake8.yml
@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
 
       - name: Setup Python 3.8
         uses: actions/setup-python@v6
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 277fe8b..fcd3f55 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
   package:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: actions/setup-python@v6
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index caf4a1c..2267186 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -18,7 +18,7 @@ jobs:
       matrix:
         python: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - uses: conda-incubator/setup-miniconda@v3
         with:
           python-version: ${{ matrix.python }}