diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
index b3e1f0b9024..a1804597d7d 100644
--- a/.github/workflows/changelog.yml
+++ b/.github/workflows/changelog.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Grep CHANGES.md for PR number
         if: contains(github.event.pull_request.labels.*.name, 'skip news') != true
diff --git a/.github/workflows/diff_shades.yml b/.github/workflows/diff_shades.yml
index a126756f102..4a5b579a0dc 100644
--- a/.github/workflows/diff_shades.yml
+++ b/.github/workflows/diff_shades.yml
@@ -19,7 +19,7 @@ jobs:
       matrix: ${{ steps.set-config.outputs.matrix }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "*"
@@ -52,7 +52,7 @@ jobs:
 
     steps:
       - name: Checkout this repository (full clone)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           # The baseline revision could be rather old so a full clone is ideal.
           fetch-depth: 0
diff --git a/.github/workflows/diff_shades_comment.yml b/.github/workflows/diff_shades_comment.yml
index 9a22ec5f0c3..dd4fc2d5ddc 100644
--- a/.github/workflows/diff_shades_comment.yml
+++ b/.github/workflows/diff_shades_comment.yml
@@ -12,7 +12,7 @@ jobs:
   comment:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
           python-version: "*"
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index fc94dea62d9..fa3d87c70f5 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -21,7 +21,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up latest Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a3106d04aae..9509e30298e 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index ebb8a9fda9e..f73b8c94619 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -25,7 +25,7 @@ jobs:
         python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 90c48013080..34ce3d3311a 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up latest Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/pypi_upload.yml b/.github/workflows/pypi_upload.yml
index 76bcd33b55e..e225ab2d08a 100644
--- a/.github/workflows/pypi_upload.yml
+++ b/.github/workflows/pypi_upload.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up latest Python
         uses: actions/setup-python@v4
@@ -55,7 +55,7 @@ jobs:
             macos_arch: "universal2"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Build wheels via cibuildwheel
         uses: pypa/cibuildwheel@v2.10.2
@@ -82,7 +82,7 @@ jobs:
 
     steps:
       - name: Checkout stable branch
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: stable
           fetch-depth: 0
diff --git a/.github/workflows/test-311.yml b/.github/workflows/test-311.yml
index c2da2465ad5..747e2626661 100644
--- a/.github/workflows/test-311.yml
+++ b/.github/workflows/test-311.yml
@@ -35,7 +35,7 @@ jobs:
         os: [ubuntu-latest, macOS-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 372d1fd5d38..61fead16f8d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -35,7 +35,7 @@ jobs:
         os: [ubuntu-latest, macOS-latest, windows-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -72,7 +72,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Send finished signal to Coveralls
         uses: AndreMiras/coveralls-python-action@v20201129
         with:
@@ -90,7 +90,7 @@ jobs:
         os: [ubuntu-latest, macOS-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up latest Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/upload_binary.yml b/.github/workflows/upload_binary.yml
index 22535a64c67..bb19d48158c 100644
--- a/.github/workflows/upload_binary.yml
+++ b/.github/workflows/upload_binary.yml
@@ -29,7 +29,7 @@ jobs:
             executable_mime: "application/x-mach-binary"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up latest Python
         uses: actions/setup-python@v4