diff --git a/.github/workflows/continuous-integration-documentation.yml b/.github/workflows/continuous-integration-documentation.yml
index 99e2069..c5261e9 100644
--- a/.github/workflows/continuous-integration-documentation.yml
+++ b/.github/workflows/continuous-integration-documentation.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Environment Variables
         run: |
           echo "CI_PYTHON_VERSION=${{ matrix.python-version }}" >> $GITHUB_ENV
diff --git a/.github/workflows/continuous-integration-quality-unit-tests.yml b/.github/workflows/continuous-integration-quality-unit-tests.yml
index a425f10..b3ff1f7 100644
--- a/.github/workflows/continuous-integration-quality-unit-tests.yml
+++ b/.github/workflows/continuous-integration-quality-unit-tests.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - name: Environment Variables
diff --git a/.github/workflows/continuous-integration-static-type-checking.yml b/.github/workflows/continuous-integration-static-type-checking.yml
index 9677d9e..3922aaf 100644
--- a/.github/workflows/continuous-integration-static-type-checking.yml
+++ b/.github/workflows/continuous-integration-static-type-checking.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Environment Variables
         run: |
           echo "CI_PACKAGE=colour_visuals" >> $GITHUB_ENV