diff --git a/.github/workflows/check-pull-request.yml b/.github/workflows/check-pull-request.yml
index 8570c888..434f2ba5 100644
--- a/.github/workflows/check-pull-request.yml
+++ b/.github/workflows/check-pull-request.yml
@@ -20,10 +20,10 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Cache dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: npm-install-cache
         with:
           enableCrossOsArchive: true
@@ -31,14 +31,14 @@ jobs:
           path: node_modules
 
       - name: Cache build
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           enableCrossOsArchive: true
           key: npm-build-${{ runner.os }}-${{ github.sha }}
           path: .server
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version-file: .nvmrc
 
@@ -85,10 +85,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Restore dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-deps
         with:
           enableCrossOsArchive: true
@@ -99,14 +99,14 @@ jobs:
 
       - name: Cache task
         if: ${{ matrix.task.cache }}
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           enableCrossOsArchive: true
           key: ${{ matrix.task.name }}-${{ runner.os }}-${{ github.sha }}
           path: ${{ matrix.task.cache }}
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version-file: .nvmrc
 
@@ -134,10 +134,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Restore dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-deps-tasks
         with:
           enableCrossOsArchive: true
@@ -147,7 +147,7 @@ jobs:
             npm-install-${{ runner.os }}-
 
       - name: Restore build
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         id: restore-build
         with:
           enableCrossOsArchive: true
@@ -157,7 +157,7 @@ jobs:
             npm-build-${{ runner.os }}-
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version-file: .nvmrc
 
@@ -171,7 +171,7 @@ jobs:
 
       - name: Cache task
         if: ${{ matrix.task.cache }}
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           enableCrossOsArchive: true
           key: ${{ matrix.task.name }}-${{ runner.os }}-${{ github.sha }}
@@ -182,7 +182,7 @@ jobs:
 
       - name: Save test coverage
         if: ${{ always() }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ${{ matrix.task.description }}
           path: coverage
@@ -196,12 +196,12 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
       - name: Restore unit test coverage
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           enableCrossOsArchive: true
           key: test-unit-${{ runner.os }}-${{ github.sha }}
@@ -210,7 +210,7 @@ jobs:
             test-unit-${{ runner.os }}-
 
       - name: SonarCloud Scan
-        uses: SonarSource/sonarqube-scan-action@v5
+        uses: SonarSource/sonarqube-scan-action@v8
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index 42e28209..9857d58a 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -12,10 +12,10 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Cache node modules
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.npm
         key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
@@ -23,7 +23,7 @@ jobs:
           ${{ runner.os }}-node-
 
     - name: Cache Docker images
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: /tmp/docker-save
         key: ${{ runner.os }}-docker-${{ hashFiles('docker-compose.integration-test.yml') }}
@@ -43,7 +43,7 @@ jobs:
           echo "No cached Docker images found"
         fi
     - name: Set up Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: '22'
         cache: 'npm'
@@ -83,7 +83,7 @@ jobs:
         done
 
     - name: Upload Test Report
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
       if: github.event_name == 'push' && github.ref == 'refs/heads/main' && success()
       with:
         name: integration-test-report
diff --git a/.github/workflows/pr-notifier.yml b/.github/workflows/pr-notifier.yml
index 64a90fa9..b65104f3 100644
--- a/.github/workflows/pr-notifier.yml
+++ b/.github/workflows/pr-notifier.yml
@@ -50,7 +50,7 @@ jobs:
 
     steps:
       - name: Build Slack JSON
-        uses: actions/github-script@v7
+        uses: actions/github-script@v9
         id: payload
         if: github.event.action != 'submitted' || github.event.review.state == 'approved'
 
@@ -89,7 +89,7 @@ jobs:
             }
 
       - name: Post to Slack
-        uses: slackapi/slack-github-action@v2.0.0
+        uses: slackapi/slack-github-action@v3.0.2
         if: github.event.action != 'submitted' || github.event.review.state == 'approved'
 
         env:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 98b47d99..6d7b1360 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Build and Publish
         uses: DEFRA/cdp-build-action/build@main