diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index f97c22e5ae0..f42d1184ce9 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -190,6 +190,8 @@ jobs:
 
       - name: Upload E2E shard assignment
         if: always()
+        # Diagnostic upload outages must not change the test verdict.
+        continue-on-error: true
         uses: actions/upload-artifact@v7
         with:
           name: e2e-shard-${{ matrix.shard_name }}-attempt-${{ github.run_attempt }}
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 641f56d7498..b21feae3230 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -72,6 +72,8 @@ jobs:
 
       - name: Upload unit shard assignment
         if: always()
+        # Diagnostic upload outages must not change the test verdict.
+        continue-on-error: true
         uses: actions/upload-artifact@v7
         with:
           name: unit-shard-node-${{ matrix.node }}-${{ matrix.shard }}-attempt-${{ github.run_attempt }}