diff --git a/.github/workflows/codeql.yaml b/.github/workflows/codeql.yaml
index f5d7ba2f..aa4e4a6d 100644
--- a/.github/workflows/codeql.yaml
+++ b/.github/workflows/codeql.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Initialize CodeQL
         uses: github/codeql-action/init@v1
       - name: 🚀 Perform CodeQL Analysis
diff --git a/.github/workflows/labels.yaml b/.github/workflows/labels.yaml
index 40bea318..cd4612fd 100644
--- a/.github/workflows/labels.yaml
+++ b/.github/workflows/labels.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🚀 Run Label Syncer
         uses: micnncim/action-label-syncer@v1.3.0
         env:
diff --git a/.github/workflows/linting.yaml b/.github/workflows/linting.yaml
index 1b00a841..1e9bd6bc 100644
--- a/.github/workflows/linting.yaml
+++ b/.github/workflows/linting.yaml
@@ -65,7 +65,7 @@ jobs:
             name: Check YAML style
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Set up Python 3.8
         id: python
         uses: actions/setup-python@v2.2.2
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 5e7ec744..c35f2d19 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Set up Python 3.8
         id: python
         uses: actions/setup-python@v2.2.2
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index a57fddf5..fc4df527 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -14,7 +14,7 @@ jobs:
         python: [3.8, 3.9]
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Set up Python ${{ matrix.python }}
         id: python
         uses: actions/setup-python@v2.2.2
@@ -59,7 +59,7 @@ jobs:
     needs: pytest
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: ⬇️ Download coverage data
         uses: actions/download-artifact@v2.0.10
       - name: 🏗 Set up Python 3.9
diff --git a/.github/workflows/typing.yaml b/.github/workflows/typing.yaml
index e4678367..d30cdbc3 100644
--- a/.github/workflows/typing.yaml
+++ b/.github/workflows/typing.yaml
@@ -13,7 +13,7 @@ jobs:
         python: [3.8, 3.9]
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Set up Python ${{ matrix.python }}
         id: python
         uses: actions/setup-python@v2.2.2
@@ -56,7 +56,7 @@ jobs:
         python: [3.8, 3.9]
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v2.3.5
+        uses: actions/checkout@v2.4.0
       - name: 🏗 Set up Python ${{ matrix.python }}
         id: python
         uses: actions/setup-python@v2.2.2