diff --git a/bundles/org.openhab.binding.netatmo/README.md b/bundles/org.openhab.binding.netatmo/README.md
index 345b2665b..21fea4fce 100644
--- a/bundles/org.openhab.binding.netatmo/README.md
+++ b/bundles/org.openhab.binding.netatmo/README.md
@@ -69,6 +69,9 @@ The Account bridge has the following configuration elements:
 
 Now that you have got your bridge _ONLINE_ you can now start a scan with the binding to auto discover your things.
 
+Starting on 2023/04/17 - Netatmo API requires an update of the refreshToken provided by the oAuth mechanism every three hours.
+Once authentication process has been done, current refreshToken is stored in `/OPENHAB_USERDATA/netatmo` folder.
+
 ## List of supported things
 
 | Thing Type      | Type   | Netatmo Object | Description                                                                                           | Thing Parameters                                                          |