diff --git a/readme.txt b/readme.txt
index 1c1bc7808..ff4cea1f9 100644
--- a/readme.txt
+++ b/readme.txt
@@ -84,6 +84,7 @@
   (backported to 2.2.8).
 - FIX: Fixed broken TIM8 support in STM32 PWM driver (bug 3418620).
 - FIX: Fixed halconf.h file corrupted in some STM32 demos (bug 3418626).
+- NEW: STM32F4 ADC driver implementation.
 - NEW: Added initialization of the NVIC VTOR register to all Cortex-Mx (v7M)
   ports. Also added a port option CORTEX_VTOR_INIT to enforce a different
   default value into the register.