diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 81912f1..8d818bf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -73,7 +73,7 @@ jobs:
         bandit -r src/ -f json -o bandit-report.json || true
         
     - name: Upload security report
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       if: always()
       with:
         name: security-report
@@ -146,7 +146,7 @@ jobs:
         pytest tests/ -k "benchmark" --benchmark-json=benchmark-results.json || true
         
     - name: Upload benchmark results
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: benchmark-results
         path: benchmark-results.json
@@ -227,7 +227,7 @@ jobs:
       run: twine check dist/*
       
     - name: Upload build artifacts
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: dist-packages
         path: dist/