diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8450a18..2e6fe9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,13 @@
 # Changelog
-All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+## [1.0.0] - 2022-01-14
+First working release running in the brewery.
+
+### Features
+Super simple rotary encoder control.
+ - Rotary button toggles heat on/off.
+ - Turning encoder raises and lowers element power (duty cycle).
+ - rotary speed is used to advance power faster if the knob is turned faster.
 
 ## [0.0.1] - 2021-09-13
 Initial upload of files.