diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6b5b385..8ddf9154 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,9 @@
 # Changelog
 
-## 0.18.0 (TBD)
+## 0.18.0 (May 18, 2024)
 
-* **Gpio**: Fix `InputPin` mode not getting set correctly for uninitialized (FUNCSEL 31 (NULL)) pins on Raspberry Pi 5 (contributed by @lukeburong).
+* **Gpio**: (Breaking change) Add support for mode `Null` for uninitialized (FUNCSEL 31 (NULL)) pins on Raspberry Pi 5 (contributed by @lukeburong).
+* **Gpio**: Fix `InputPin` mode not getting set correctly for uninitialized pins on Raspberry Pi 5 (contributed by @lukeburong).
 * **Pwm**: (Breaking change) Add `Error::UnknownModel`.
 * **Pwm**: Fix support for hardware PWM on Raspberry Pi 5, caused by incorrect PWM chip/channel.