diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 984a508..5ddbf76 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -17,10 +17,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup .NET
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: 10.0.x
 
@@ -35,7 +35,7 @@ jobs:
 
       - name: Retain Windows test evidence
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: windows-test-results-${{ github.sha }}
           path: artifacts/test-results/*.trx
@@ -68,7 +68,7 @@ jobs:
           } | ConvertTo-Json | Set-Content "$candidate/candidate.json" -Encoding utf8
 
       - name: Retain unsigned candidate for acceptance
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: installed-unsigned-candidate-${{ github.sha }}
           path: |
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 5afcad1..7ab4a05 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -14,6 +14,6 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Test inventory, diagnostics, and redaction
         run: python3 -B -m unittest discover -s tests/linux -v