diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 9bb7020..ab5ca24 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Sphinx docs to gh-pages
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8f5fa5d..f60905c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,7 +9,7 @@ jobs:
     if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/test_code.yml b/.github/workflows/test_code.yml
index 961946f..e4e88ae 100644
--- a/.github/workflows/test_code.yml
+++ b/.github/workflows/test_code.yml
@@ -10,7 +10,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
       - uses: pre-commit/action@v3.0.0
   test_code:
@@ -22,7 +22,7 @@ jobs:
         os: [ubuntu-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
@@ -43,7 +43,7 @@ jobs:
         python-version: ['3.10']
         os: [ubuntu-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with: