diff --git a/Using-the-library-with-Arduino.md b/Using-the-library-with-Arduino.md
index 5ef5287..9a013b9 100644
--- a/Using-the-library-with-Arduino.md
+++ b/Using-the-library-with-Arduino.md
@@ -8,6 +8,14 @@ If you don't use the Arduino IDE, please read [Using the library without Arduino
 ArduinoJson is available in Arduino's Library Manager.
 You can automatically install it from there.
 
+Note: if ArduinoJson doesn't appear in Libray Manager, or only if old version are listed, try to delete the local cache. For example, on Windows, you need to delete:
+
+* `%LOCALAPPDATA%\Arduino15\library_index.json`
+* `%LOCALAPPDATA%\Arduino15\library_index.json.tmp.gz`
+
+You don't even need to close Arduino, just re-open the library manager.
+
+
 ### For older Arduino IDE
 
 You needed [download the zip package](https://github.com/bblanchon/ArduinoJson/releases) and extract it to: