diff --git a/CHANGELOG.md b/CHANGELOG.md
index e07d2aa3506f879c22c589681302195a0ba7273c..0cfc3690fb582f809f5b8d0309ada4a968a05e46 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Change Log
 
+## [v0.2.3](https://transfer.hft-stuttgart.de/gitlab/co2ampel/ampel-firmware/-/releases/v0.2.3) 2022/02/22
+
+* Last version with static configuration
+* Allow unencrypted MQTT
+* Updated libraries
+* Slightly refactored structure, leaner header files
+* `led 0/1` instead of `night_mode` as command
+
 ## [v0.2.2](https://transfer.hft-stuttgart.de/gitlab/co2ampel/ampel-firmware/-/releases/v0.2.2) 2021/10/01
 
 * MAC address is now shown at startup and via HTTP
diff --git a/ampel-firmware/util.h b/ampel-firmware/util.h
index 495f7eaa0b149658631ec38b1cd5dab318e00af8..de6b1e0cf5c87e0751388755d5c46e7596d31d6a 100644
--- a/ampel-firmware/util.h
+++ b/ampel-firmware/util.h
@@ -26,7 +26,7 @@ class Ampel {
 private:
   static void showFreeSpace();
 public:
-  const char *version = "v0.2.3-DEV"; // Update manually after significant changes.
+  const char *version = "v0.2.3"; // Update manually after significant changes.
   const char *board;
   const char *sensorId;
   const char *macAddress;