diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0aa910bbb..c8fe4b61f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ All notable changes to this project will be documented in this file.
 - Command ``Gpio17`` replaces command ``Adc``
 - Command ``Gpios`` replaces command ``Adcs``
 - Management of serial baudrate (#9554)
+- ``#define MQTT_FINGERPRINT`` from string to hexnumbers (#9570)
 
 ### Fixed
 - Convert AdcParam parameters from versions before v9.0.0.2
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index bb3947881..5395efdd0 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -77,6 +77,7 @@ The attached binaries can also be downloaded from http://ota.tasmota.com/tasmota
 - Redesigned ESP8266 GPIO internal representation in line with ESP32 changing ``Template`` layout too
 - Command ``Gpio17`` replaces command ``Adc``
 - Command ``Gpios`` replaces command ``Adcs``
+- ``#define MQTT_FINGERPRINT`` from string to hexnumbers (#9570)
 - New IR Raw compact format (#9444)
 - MAX31865 driver to support up to 6 thermocouples selected by ``MX31865 CS`` instead of ``SSPI CS`` (#9103)
 - A4988 optional microstep pin selection