diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f1505aa5..17cbd756 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
       - name: "Linting: black"
@@ -29,7 +29,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
       - name: "Linting: bandit"
@@ -42,7 +42,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
       - name: "Linting: pydocstyle"
@@ -55,7 +55,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
       - name: "Linting: flake8"
@@ -68,7 +68,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
         with:
@@ -83,7 +83,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
       - name: "Linting: yamllint"
@@ -96,7 +96,7 @@ jobs:
       INVOKE_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
         with:
@@ -120,7 +120,7 @@ jobs:
       PYTHON_VER: "${{ matrix.python-version }}"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v4"
         with:
@@ -138,7 +138,7 @@ jobs:
     if: "startsWith(github.ref, 'refs/tags/v')"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Set up Python"
         uses: "actions/setup-python@v4"
         with:
@@ -167,7 +167,7 @@ jobs:
     if: "startsWith(github.ref, 'refs/tags/v')"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v3"
+        uses: "actions/checkout@v4"
       - name: "Set up Python"
         uses: "actions/setup-python@v4"
         with: