diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1618e8..f309dde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## [1.2.0] - 2025-02-17
+### Added
+- implement OTA functionality and update build scripts; change upgrade link to OTA in HTML
+- update version to v1.2.0 and modify build scripts in platformio.ini; remove unused includes in scale.cpp and website.cpp
+- update version to v1.2.0 and add upgrade link in HTML files
+- add esp_wifi.h and set maximum transmit power in WiFi initialization
+
+### Changed
+- update changelog for version 1.1.0
+- clean up changelog and update script execution in platformio.ini
+- update changelog for version 1.1.0
+
+### Fixed
+- update version number in header to v1.1.0
+- correct version number in nav bar
+
+
 ## [1.1.0] - 2025-02-16
 ### Changed
 - clean up changelog and update script execution in platformio.ini