diff --git a/.github/workflows/cicd-1-pull-request.yaml b/.github/workflows/cicd-1-pull-request.yaml
index 781ad958..a747ef57 100644
--- a/.github/workflows/cicd-1-pull-request.yaml
+++ b/.github/workflows/cicd-1-pull-request.yaml
@@ -30,7 +30,7 @@ jobs:
       pr_number: ${{ steps.pr_exists.outputs.pr_number }}
     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-3-deploy.yaml b/.github/workflows/cicd-3-deploy.yaml
index 5230577e..80a66fcd 100644
--- a/.github/workflows/cicd-3-deploy.yaml
+++ b/.github/workflows/cicd-3-deploy.yaml
@@ -37,7 +37,7 @@ jobs:
       # tag: ${{ steps.variables.outputs.tag }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set CI/CD variables"
         id: variables
         run: |
@@ -70,7 +70,7 @@ jobs:
     needs: metadata
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: "Get version"
         id: get-asset-version
diff --git a/.github/workflows/pr_closed.yaml b/.github/workflows/pr_closed.yaml
index 3108c511..213aafec 100644
--- a/.github/workflows/pr_closed.yaml
+++ b/.github/workflows/pr_closed.yaml
@@ -48,7 +48,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Updating Main Environment
         env:
diff --git a/.github/workflows/release_created.yaml b/.github/workflows/release_created.yaml
index 47859218..8ad92086 100644
--- a/.github/workflows/release_created.yaml
+++ b/.github/workflows/release_created.yaml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Deploy Nonprod Environment
         env:
diff --git a/.github/workflows/scheduled-repository-template-sync.yaml b/.github/workflows/scheduled-repository-template-sync.yaml
index e9114865..cd4214e7 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 df4947e5..a42a35c0 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@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493 # v4.2.2
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/stage-1-commit.yaml b/.github/workflows/stage-1-commit.yaml
index ececcb36..76337f31 100644
--- a/.github/workflows/stage-1-commit.yaml
+++ b/.github/workflows/stage-1-commit.yaml
@@ -39,7 +39,7 @@ 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 scan all commits
       - name: "Scan secrets"
@@ -50,7 +50,7 @@ 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 file format"
@@ -61,7 +61,7 @@ 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 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: 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 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: 5
     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: 5
     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 efcb2ac4..e64d2a5d 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 fabfe110..204d1101 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 docs"
         uses: ./.github/actions/build-docs
         with:
@@ -50,7 +50,7 @@ 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 ..."
@@ -67,7 +67,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Build artefact n"
         run: |
           echo "Building artefact n ..."
diff --git a/.github/workflows/stage-4-acceptance.yaml b/.github/workflows/stage-4-acceptance.yaml
index e7994164..5a9bb9ce 100644
--- a/.github/workflows/stage-4-acceptance.yaml
+++ b/.github/workflows/stage-4-acceptance.yaml
@@ -43,7 +43,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Create infractructure"
         run: |
           echo "Creating infractructure..."
@@ -60,7 +60,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run contract test"
         run: |
           make test-contract
@@ -74,7 +74,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run security test"
         run: |
           make test-security
@@ -88,7 +88,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run UI test"
         run: |
           make test-ui
@@ -102,7 +102,7 @@ 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
@@ -116,7 +116,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run integration test"
         run: |
           make test-integration
@@ -130,7 +130,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run accessibility test"
         run: |
           make test-accessibility
@@ -144,7 +144,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run load tests"
         run: |
           make test-load
@@ -168,7 +168,7 @@ 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..."