diff --git a/.github/workflows/dependabot-prs.yml b/.github/workflows/dependabot-prs.yml
index f75939b1e..2d97d76df 100644
--- a/.github/workflows/dependabot-prs.yml
+++ b/.github/workflows/dependabot-prs.yml
@@ -18,7 +18,7 @@ jobs:
       id: dependabot-metadata
       uses: dependabot/fetch-metadata@v1.6.0
 
-    - uses: actions/checkout@v3.5.2
+    - uses: actions/checkout@v4
       with:
         ref: ${{ github.event.pull_request.head.ref }}
 
diff --git a/.github/workflows/docs-linkcheck.yml b/.github/workflows/docs-linkcheck.yml
index e5c54dade..04f9e4d5b 100644
--- a/.github/workflows/docs-linkcheck.yml
+++ b/.github/workflows/docs-linkcheck.yml
@@ -14,7 +14,7 @@ jobs:
         os: [ubuntu-latest]
       fail-fast: False
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 64bdbe636..6a7747f8c 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -19,7 +19,7 @@ jobs:
         os: [ubuntu-latest]
       fail-fast: False
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/type_completeness.yml b/.github/workflows/type_completeness.yml
index 39dad224e..7ab7f6dc8 100644
--- a/.github/workflows/type_completeness.yml
+++ b/.github/workflows/type_completeness.yml
@@ -12,7 +12,7 @@ jobs:
     name:   test-type-completeness
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: git fetch --depth=1  # https://github.com/actions/checkout/issues/329#issuecomment-674881489
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 3a3c251d5..b021dccbe 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -20,7 +20,7 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
       fail-fast: False
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: