diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fa00910..87fe2a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
         run: npm run build
 
       - name: Upload frontend build artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: frontend-dist
           path: web/frontend/dist/
@@ -219,7 +219,7 @@ jobs:
           fi
 
       - name: Upload Playwright report
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         if: always()
         with:
           name: playwright-report
@@ -274,7 +274,7 @@ jobs:
           echo "Built: ${OUTPUT_NAME}"
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: cortex-${{ matrix.goos }}-${{ matrix.goarch }}
           path: cortex-*
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index b6fe747..200fefc 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -64,7 +64,7 @@ jobs:
           npm audit --json > npm-audit.json || true
 
       - name: Upload npm audit results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         if: always()
         with:
           name: npm-audit-results