diff --git a/portainer/README.md b/portainer/README.md
index 94d295901..1c42c62e8 100644
--- a/portainer/README.md
+++ b/portainer/README.md
@@ -1,4 +1,5 @@
 ## ⚠ Open Request : [✨ [REQUEST] Portainer Agent (opened 2022-11-19)](https://github.com/alexbelgium/hassio-addons/issues/565) by [@rikardronnkvist](https://github.com/rikardronnkvist)
+## ⚠ Open Issue : [🐛 [Portainer] Unreliable since v2.17.1-4 - supervisor entities regularly unavailable (opened 2023-03-04)](https://github.com/alexbelgium/hassio-addons/issues/745) by [@bcutter](https://github.com/bcutter)
 # Home assistant add-on: Portainer
 
 [![Donate][donation-badge]](https://www.buymeacoffee.com/alexbelgium)