diff --git a/prometheus_query/manifest.json b/prometheus_query/manifest.json
index 61d1be4..bef1338 100644
--- a/prometheus_query/manifest.json
+++ b/prometheus_query/manifest.json
@@ -4,5 +4,6 @@
   "version": "2021.06.1",
   "documentation": "https://github.com/lfasci/homeassistant-prometheus-query",
   "codeowners": ["lfasci"],
-  "requirements": ["prometheus-client==0.9.0", "requests==2.25.0"]
+  "requirements": ["prometheus-client==0.9.0", "requests==2.25.0"],
+  "iot_class": "local_polling"
 }