diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index caec41ec..85ffc0c2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -86,7 +86,7 @@ jobs:
 
       - name: Upload test suite outputs to GitHub
         if: ${{ always() && matrix.container_version != 'slim' }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: remage-test-output-g4flavor-${{ matrix.container_version }}
           # artifacts must have a ".output*" extension
@@ -109,7 +109,7 @@ jobs:
 
       - name: Upload validation report to GitHub
         if: ${{ always() && matrix.container_version != 'slim' }}
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: remage-validation-report-g4flavor-${{ matrix.container_version }}
           path: build/docs/validation/_build/