diff --git a/.github/workflows/cicd-1-pull-request.yaml b/.github/workflows/cicd-1-pull-request.yaml
index d8dd60b15..f40e247fb 100644
--- a/.github/workflows/cicd-1-pull-request.yaml
+++ b/.github/workflows/cicd-1-pull-request.yaml
@@ -24,7 +24,7 @@ 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 979cd9832..ca03e38db 100644
--- a/.github/workflows/cicd-2-publish.yaml
+++ b/.github/workflows/cicd-2-publish.yaml
@@ -28,7 +28,7 @@ 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
@@ -68,7 +68,7 @@ jobs:
           python-version: '3.13'
 
       - name: "Checkout Repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: "Build lambda artefact"
         run: |
diff --git a/.github/workflows/cicd-3-deploy.yaml b/.github/workflows/cicd-3-deploy.yaml
index 0cb1ec02f..567935825 100644
--- a/.github/workflows/cicd-3-deploy.yaml
+++ b/.github/workflows/cicd-3-deploy.yaml
@@ -48,7 +48,7 @@ jobs:
       tag: ${{ steps.variables.outputs.tag }}
     steps:
       - name: "Checkout tag"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.inputs.tag }}
 
@@ -97,7 +97,7 @@ jobs:
           python-version: "3.13"
 
       - name: "Checkout Repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: "Build lambda artefact"
         run: |
diff --git a/.github/workflows/cicd-4-test.yaml b/.github/workflows/cicd-4-test.yaml
index 1ada7d21c..77a49abba 100644
--- a/.github/workflows/cicd-4-test.yaml
+++ b/.github/workflows/cicd-4-test.yaml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/manual-terraform-apply.yaml b/.github/workflows/manual-terraform-apply.yaml
index c4f9fe151..e820f79d4 100644
--- a/.github/workflows/manual-terraform-apply.yaml
+++ b/.github/workflows/manual-terraform-apply.yaml
@@ -31,7 +31,7 @@ jobs:
           python-version: '3.13'
 
       - name: "Checkout Repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: "Build lambda artefact"
         run: |
diff --git a/.github/workflows/stage-1-commit.yaml b/.github/workflows/stage-1-commit.yaml
index 10c01479b..115579a68 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"
@@ -72,7 +72,7 @@ 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"
@@ -83,7 +83,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Lint Terraform"
         uses: ./.github/actions/lint-terraform
   checkov-terraform:
@@ -92,7 +92,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run Checkov"
         uses: bridgecrewio/checkov-action@v12
         with:
@@ -114,7 +114,7 @@ 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:
@@ -133,7 +133,7 @@ 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 86af1bd16..996afc203 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: "Set up Python"
         uses: actions/setup-python@v5
         with:
@@ -58,7 +58,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set up Python"
         uses: actions/setup-python@v5
         with:
@@ -79,7 +79,7 @@ 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: "Get the coverage report"
diff --git a/.github/workflows/stage-3-build.yaml b/.github/workflows/stage-3-build.yaml
index dddb08103..db7a9e4b5 100644
--- a/.github/workflows/stage-3-build.yaml
+++ b/.github/workflows/stage-3-build.yaml
@@ -43,7 +43,7 @@ jobs:
         with:
           python-version: '3.13'
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Build lambda artefact"
         run: |
           make dependencies install-python
diff --git a/.github/workflows/stage-4-acceptance.yaml b/.github/workflows/stage-4-acceptance.yaml
index 6838da30c..3cb344dda 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
@@ -114,7 +114,7 @@ jobs:
       LOCALSTACK_INTERNAL_ENDPOINT: http://localstack:4566/
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Set up Python"
         uses: actions/setup-python@v5
         with:
@@ -159,7 +159,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run accessibility test"
         run: |
           make test-accessibility
@@ -173,7 +173,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Run load tests"
         run: |
           make test-load
@@ -197,7 +197,7 @@ 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..."