diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 0cec987..394ae80 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -60,7 +60,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v7
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
diff --git a/.github/workflows/docker-acceptance.yml b/.github/workflows/docker-acceptance.yml
index c59837b..deb2616 100644
--- a/.github/workflows/docker-acceptance.yml
+++ b/.github/workflows/docker-acceptance.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Verify Docker dependency policy
         run: |
diff --git a/.github/workflows/ironclad-pipeline.yml b/.github/workflows/ironclad-pipeline.yml
index b344ab2..9f835fd 100644
--- a/.github/workflows/ironclad-pipeline.yml
+++ b/.github/workflows/ironclad-pipeline.yml
@@ -13,10 +13,10 @@ jobs:
     
     steps:
       - name: 📥 Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: 🟢 Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version-file: '.nvmrc'
 
@@ -137,7 +137,7 @@ jobs:
 
       - name: 📤 Upload AI Runtime Diagnostics
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ai-runtime-diagnostics-${{ github.run_id }}
           path: ai-ci-logs/
@@ -151,7 +151,7 @@ jobs:
 
       - name: 📄 Archive Audit Certificate
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: deployment-certificate
           path: audit_reports/*.md
diff --git a/.github/workflows/platform-production-readiness.yml b/.github/workflows/platform-production-readiness.yml
index 7f32aff..fb8b1d1 100644
--- a/.github/workflows/platform-production-readiness.yml
+++ b/.github/workflows/platform-production-readiness.yml
@@ -82,17 +82,17 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 2
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: '20.12.2'
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v7
         with:
           python-version: '3.12'
 
@@ -181,7 +181,7 @@ jobs:
 
       - name: Upload production readiness attestation
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: platform-production-attestation-${{ github.run_id }}
           path: .build-logs/platform-production-attestation.json
diff --git a/.github/workflows/private-security-regression.yml b/.github/workflows/private-security-regression.yml
index e75c2ea..6f75378 100644
--- a/.github/workflows/private-security-regression.yml
+++ b/.github/workflows/private-security-regression.yml
@@ -41,18 +41,18 @@ jobs:
 
     steps:
       - name: Checkout source without persisted credentials
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 1
           persist-credentials: false
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: '20.12.2'
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v7
         with:
           python-version: '3.12'
 
@@ -108,7 +108,7 @@ jobs:
 
       - name: Upload regression evidence
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: private-security-regression-${{ github.run_id }}
           path: security-regression-evidence/
diff --git a/.github/workflows/security-and-acceptance.yml b/.github/workflows/security-and-acceptance.yml
index 5c151e4..82bada2 100644
--- a/.github/workflows/security-and-acceptance.yml
+++ b/.github/workflows/security-and-acceptance.yml
@@ -33,13 +33,13 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 2
           persist-credentials: false
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v7
         with:
           node-version: '20.12.2'
 
@@ -197,7 +197,7 @@ jobs:
 
       - name: Upload build phase logs
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: build-phase-logs-${{ github.run_id }}
           path: .build-logs/
@@ -215,7 +215,7 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/vision-scada-data-exchange.yml b/.github/workflows/vision-scada-data-exchange.yml
index cfa9552..ecc02f3 100644
--- a/.github/workflows/vision-scada-data-exchange.yml
+++ b/.github/workflows/vision-scada-data-exchange.yml
@@ -75,11 +75,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 25
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           persist-credentials: false
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: '20.12.2'
 
@@ -87,12 +87,12 @@ jobs:
       # Reuse only an exact package.json cache key. Do not restore metadata from
       # an older dependency graph, because security pins may have changed.
       - name: Cache npm download artifacts
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.npm
           key: npm-${{ runner.os }}-node-20.12.2-${{ hashFiles('package.json') }}
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v7
         with:
           python-version: '3.12'