diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d0e2825..cfde3c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,10 +17,10 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '8.0.x'
 
@@ -61,7 +61,7 @@ jobs:
 
       - name: Upload test and coverage artifacts
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ARIEC60870-test-results
           path: artifacts/test-results
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index b476df2..65d3df8 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -23,16 +23,16 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@v4
         with:
           languages: csharp
           queries: security-extended,security-and-quality
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '8.0.x'
 
@@ -40,4 +40,4 @@ jobs:
         run: dotnet build ARIEC60870.sln --configuration Release
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@v4
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index fa71327..7d57b70 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -15,11 +15,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Dependency Review
         if: ${{ vars.ENABLE_DEPENDENCY_REVIEW == 'true' }}
-        uses: actions/dependency-review-action@v4
+        uses: actions/dependency-review-action@v5
         with:
           fail-on-severity: high
 
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 4a8389e..02352cb 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Validate canonical site files
         shell: bash
@@ -51,13 +51,13 @@ jobs:
           cmp -s site/index.html docs/index.html || { echo "docs/index.html is out of sync with site/index.html"; exit 1; }
 
       - name: Configure Pages
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@v6
 
       - name: Upload site artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v5
         with:
           path: site
 
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5
diff --git a/.github/workflows/release-package.yml b/.github/workflows/release-package.yml
index 7363fee..9a0d387 100644
--- a/.github/workflows/release-package.yml
+++ b/.github/workflows/release-package.yml
@@ -54,7 +54,7 @@ jobs:
       notes_file: ${{ steps.release.outputs.notes_file }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Resolve release inputs
         id: release
@@ -126,10 +126,10 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '8.0.x'
 
@@ -181,7 +181,7 @@ jobs:
           }
 
       - name: Attest release artifacts
-        uses: actions/attest-build-provenance@v2
+        uses: actions/attest-build-provenance@v4
         with:
           subject-path: |
             artifacts/release/ARIEC60870-v${{ needs.resolve.outputs.version }}-win-x64-*.zip
@@ -189,7 +189,7 @@ jobs:
             artifacts/release/SHA256SUMS.txt
 
       - name: Upload workflow artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: ARIEC60870-v${{ needs.resolve.outputs.version }}-windows-packages
           path: artifacts/release/*
@@ -204,10 +204,10 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Download release artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: ARIEC60870-v${{ needs.resolve.outputs.version }}-windows-packages
           path: artifacts/release
diff --git a/.github/workflows/repository-hygiene.yml b/.github/workflows/repository-hygiene.yml
index 8b3b53c..af2884d 100644
--- a/.github/workflows/repository-hygiene.yml
+++ b/.github/workflows/repository-hygiene.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check required public repo files
         shell: bash
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index b5a95f9..1f10f9c 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -24,7 +24,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
 
@@ -36,6 +36,6 @@ jobs:
           publish_results: true
 
       - name: Upload Scorecard SARIF
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@v4
         with:
           sarif_file: scorecard-results.sarif