diff --git a/source/_integrations/prometheus.markdown b/source/_integrations/prometheus.markdown
index 1df7c93ec88..28450367127 100644
--- a/source/_integrations/prometheus.markdown
+++ b/source/_integrations/prometheus.markdown
@@ -4,6 +4,7 @@ description: Record events in Prometheus.
 ha_category:
   - History
 ha_release: 0.49
+ha_iot_class: Assumed State
 ha_domain: prometheus
 ha_codeowners:
   - '@knyar'