diff --git a/.github/workflows/cicd-1-pull-request.yaml b/.github/workflows/cicd-1-pull-request.yaml
index 2aeaafb..837f78d 100644
--- a/.github/workflows/cicd-1-pull-request.yaml
+++ b/.github/workflows/cicd-1-pull-request.yaml
@@ -30,7 +30,7 @@ jobs:
       does_pull_request_exist: ${{ steps.pr_exists.outputs.does_pull_request_exist }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set CI/CD variables"
         id: variables
         run: |
diff --git a/.github/workflows/cicd-2-publish.yaml b/.github/workflows/cicd-2-publish.yaml
index 4c9fbe0..ccf103e 100644
--- a/.github/workflows/cicd-2-publish.yaml
+++ b/.github/workflows/cicd-2-publish.yaml
@@ -22,7 +22,7 @@ jobs:
       version: ${{ steps.variables.outputs.version }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set CI/CD variables"
         id: variables
         run: |
@@ -52,7 +52,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Get the artefacts"
         run: |
           echo "Getting the artefacts created by the build stage ..."
diff --git a/.github/workflows/cicd-3-deploy.yaml b/.github/workflows/cicd-3-deploy.yaml
index 686c55d..8b5e55a 100644
--- a/.github/workflows/cicd-3-deploy.yaml
+++ b/.github/workflows/cicd-3-deploy.yaml
@@ -58,7 +58,7 @@ jobs:
       deploy_environment: ${{ steps.variables.outputs.deploy_environment }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set CI/CD variables"
         id: variables
         run: |
@@ -114,7 +114,7 @@ jobs:
       CI_PIPELINE_IID: ${{ needs.metadata.outputs.ci_pipeline_iid }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
         with:
diff --git a/.github/workflows/reusable_internal_repo_build.yaml b/.github/workflows/reusable_internal_repo_build.yaml
index d7798f3..62951e6 100644
--- a/.github/workflows/reusable_internal_repo_build.yaml
+++ b/.github/workflows/reusable_internal_repo_build.yaml
@@ -42,7 +42,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Trigger nhs-notify-internal static environment workflow deployment
         shell: bash
diff --git a/.github/workflows/scheduled-repository-template-sync.yaml b/.github/workflows/scheduled-repository-template-sync.yaml
index e911486..cd4214e 100644
--- a/.github/workflows/scheduled-repository-template-sync.yaml
+++ b/.github/workflows/scheduled-repository-template-sync.yaml
@@ -16,10 +16,10 @@ jobs:
 
     steps:
     - name: Check out the repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Check out external repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
       with:
         repository: NHSDigital/nhs-notify-repository-template
         path: nhs-notify-repository-template
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 822410d..2bcd119 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/stage-1-commit.yaml b/.github/workflows/stage-1-commit.yaml
index 226ee5f..11ff259 100644
--- a/.github/workflows/stage-1-commit.yaml
+++ b/.github/workflows/stage-1-commit.yaml
@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to scan all commits
       - name: "Scan secrets"
@@ -50,7 +50,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check file format"
@@ -61,7 +61,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check Markdown format"
@@ -75,7 +75,7 @@ jobs:
         contents: write
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check to see if Terraform Docs are up-to-date"
@@ -96,7 +96,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check English usage"
@@ -107,7 +107,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check TODO usage"
@@ -119,7 +119,7 @@ jobs:
       terraform_changed: ${{ steps.check.outputs.terraform_changed }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: "Check for Terraform changes"
         id: check
@@ -143,7 +143,7 @@ jobs:
     if: needs.detect-terraform-changes.outputs.terraform_changed == 'true'
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Lint Terraform"
         uses: ./.github/actions/lint-terraform
   trivy:
@@ -154,7 +154,7 @@ jobs:
     if: needs.detect-terraform-changes.outputs.terraform_changed == 'true'
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Setup ASDF"
         uses: asdf-vm/actions/setup@v4
       - name: "Perform Setup"
@@ -170,7 +170,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Count lines of code"
         uses: ./.github/actions/create-lines-of-code-report
         with:
@@ -189,7 +189,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Scan dependencies"
         uses: ./.github/actions/scan-dependencies
         with:
diff --git a/.github/workflows/stage-2-test.yaml b/.github/workflows/stage-2-test.yaml
index efcb2ac..e64d2a5 100644
--- a/.github/workflows/stage-2-test.yaml
+++ b/.github/workflows/stage-2-test.yaml
@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run unit test suite"
         run: |
           make test-unit
@@ -52,7 +52,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run linting"
         run: |
           make test-lint
@@ -66,7 +66,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run test coverage check"
         run: |
           make test-coverage
@@ -83,7 +83,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # Full history is needed to improving relevancy of reporting
       - name: "Perform static analysis"
diff --git a/.github/workflows/stage-3-build.yaml b/.github/workflows/stage-3-build.yaml
index e65231f..99e1cc8 100644
--- a/.github/workflows/stage-3-build.yaml
+++ b/.github/workflows/stage-3-build.yaml
@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Build artefact 1"
         run: |
           echo "Building artefact 1 ..."
@@ -56,7 +56,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Build artefact 2"
         run: |
           echo "Building artefact 2 ..."
diff --git a/.github/workflows/stage-4-acceptance.yaml b/.github/workflows/stage-4-acceptance.yaml
index d554f98..a9a2959 100644
--- a/.github/workflows/stage-4-acceptance.yaml
+++ b/.github/workflows/stage-4-acceptance.yaml
@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Create infractructure"
         run: |
           echo "Creating infractructure..."
@@ -56,7 +56,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run contract test"
         run: |
           make test-contract
@@ -70,7 +70,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run security test"
         run: |
           make test-security
@@ -84,7 +84,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run UI test"
         run: |
           make test-ui
@@ -98,7 +98,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run UI performance test"
         run: |
           make test-ui-performance
@@ -112,7 +112,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run integration test"
         run: |
           make test-integration
@@ -126,7 +126,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run accessibility test"
         run: |
           make test-accessibility
@@ -140,7 +140,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run load tests"
         run: |
           make test-load
@@ -164,7 +164,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Tear down environment"
         run: |
           echo "Tearing down environment..."