diff --git a/custom_components/attributes/manifest.json b/custom_components/attributes/manifest.json
index c2ef0bd..6e7fc3f 100644
--- a/custom_components/attributes/manifest.json
+++ b/custom_components/attributes/manifest.json
@@ -4,6 +4,7 @@
   "version": "1.2.1",
   "documentation": "https://github.com/pilotak/homeassistant-attributes",
   "issue_tracker": "https://github.com/pilotak/homeassistant-attributes/issues",
+  "iot_class": "assumed_state",
   "requirements": [],
   "dependencies": [],
   "codeowners": ["@pilotak"]