diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 5c8bfb8..8ca9d37 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -130,6 +130,15 @@ jobs:
             echo "  namespaces first: ${ns_files[*]}"
             kubectl apply -f "${ns_files[@]}"
           fi
+          if [ -f "$repo/prometheus-stack/k8s/active" ]; then
+            echo "== Upgrading kube-prometheus-stack =="
+            helm upgrade --install prometheus-stack prometheus-community/kube-prometheus-stack \
+              --namespace prometheus \
+              --version 86.2.3 \
+              --values "$repo/prometheus-stack/k8s/grafana-values.yaml" \
+              --wait
+          fi
+
           if [ "${#other_files[@]}" -gt 0 ]; then
             echo "  resources: ${other_files[*]}"
             kubectl apply "${prune_opts[@]}" -f "${other_files[@]}"