diff --git a/changelog.d/0-release-notes/wire-service-label b/changelog.d/0-release-notes/wire-service-label
index 08990ae1363..56d8e456004 100644
--- a/changelog.d/0-release-notes/wire-service-label
+++ b/changelog.d/0-release-notes/wire-service-label
@@ -1,9 +1,21 @@
-The `wireService` label has been removed.
+In the helm charts, the `wireService` label has been removed.
 
 In some cases, we were already setting the `app` label too.
 
 Now we consistently use the `app` label to label different wire services.
 
+The `wireService` label was also used in the `spec.selector.matchLabels` field
+on existing `Deployment` / `StatefulSet` resources.
+As these fields being immutable, changing them isn't possible without recreation.
+
+If you encounter an issue like
+
+> field is immutable && cannot patch "*" with kind *
+
+you need to manually delete these StatefulSet and Deployment resources, and apply helm again, which will recreate them.
+
+This means downtime, so plan a maintenance window for it.
+
 The `wire-server-metrics` chart was previously running some custom
 configuration to automatically add all payloads with a `wireService` label into
 metrics scraping.