diff --git a/source/_integrations/shelly.markdown b/source/_integrations/shelly.markdown
index 3b3dc7e4c2e..32888ece325 100644
--- a/source/_integrations/shelly.markdown
+++ b/source/_integrations/shelly.markdown
@@ -214,4 +214,5 @@ shelly:
 - Only supports firmware 1.8 and later for generation 1 devices
 - Only supports firmware 0.8 and later for generation 2 devices
 - Generation 1 "Shelly 4Pro" and "Shelly Sense" are not supported (devices based on old CoAP v1 protocol)
+- Device authentication for generation 2 devices is not supported
 - Before set up, battery-powered devices must be woken up by pressing the button on the device.