diff --git a/CHANGELOG.md b/CHANGELOG.md
index da550ceb1..ce7c62b42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 ## [14.4.1.2] 
 ### Added
 - Support for ESP32 Two-Wire Automotive Interface (TWAI) or Controller Area Network (CAN) busses
+- Support for Senseair S88 CO2 sensor (#22733)
 
 ### Breaking Changed
 
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 8a54ed080..a4364ddaa 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -118,6 +118,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
 ### Added
 - Command ``SetOption163 1`` to disable display of Device name in GUI header
 - Support for PCF85063 RTC [#22727](https://github.com/arendst/Tasmota/issues/22727)
+- Support for Senseair S88 CO2 sensor [#22733](https://github.com/arendst/Tasmota/issues/22733)
 - Support for ESP32 Two-Wire Automotive Interface (TWAI) or Controller Area Network (CAN) busses
 - Berry `animate.crenel` primitive [#22673](https://github.com/arendst/Tasmota/issues/22673)
 - Berry scroll to Leds_matrix [#22693](https://github.com/arendst/Tasmota/issues/22693)