diff --git a/.github/workflows/sphinx.yml b/.github/workflows/sphinx.yml
index 1bd15a0..5dd4ce8 100644
--- a/.github/workflows/sphinx.yml
+++ b/.github/workflows/sphinx.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       # check out sources that will be used for autodocs, plus readme
       - name: Checkout
-        uses: actions/checkout@v3.5.2
+        uses: actions/checkout@v4.1.2
 
       - name: Install rsync
         run: |
diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index 492de4f..38a123b 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -26,7 +26,7 @@ jobs:
         python-version: [3.8, 3.9, '3.10']
 
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v4.1.2
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-latest
     if: contains(github.ref, 'tags')
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v4.1.2
       - name: Set up Python
         uses: actions/setup-python@v4
         with: