diff --git a/.github/workflows/bleeding-edge.yaml b/.github/workflows/bleeding-edge.yaml
index 1d97abae681..f6c3759f9e9 100644
--- a/.github/workflows/bleeding-edge.yaml
+++ b/.github/workflows/bleeding-edge.yaml
@@ -32,7 +32,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python (newest testable version)
       uses: actions/setup-python@v4
diff --git a/.github/workflows/build-test.yaml b/.github/workflows/build-test.yaml
index 1edba92413a..88107726817 100644
--- a/.github/workflows/build-test.yaml
+++ b/.github/workflows/build-test.yaml
@@ -68,10 +68,10 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Checkout repo (bare)
       if: matrix.tests-type != 'answer'
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Checkout repo (with submodules)
       if: matrix.tests-type == 'answer'
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         submodules: true
     - name: Set up Conda (windows only)
@@ -112,7 +112,7 @@ jobs:
         python-version: '3.11'
 
     - name: Checkout repo (with submodules)
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         submodules: true
 
diff --git a/.github/workflows/type-checking.yaml b/.github/workflows/type-checking.yaml
index bf2952a8752..8db1c572987 100644
--- a/.github/workflows/type-checking.yaml
+++ b/.github/workflows/type-checking.yaml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v4
diff --git a/.github/workflows/wheels.yaml b/.github/workflows/wheels.yaml
index 17e4489467e..44d40ec1981 100644
--- a/.github/workflows/wheels.yaml
+++ b/.github/workflows/wheels.yaml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build wheels for CPython
         uses: pypa/cibuildwheel@v2.15.0
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build sdist
         run: pipx run build --sdist
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         submodules: true
     - name: Set up Python