diff --git a/doc/source/changelog.rst b/doc/source/changelog.rst
index f4751850..42cf59c0 100644
--- a/doc/source/changelog.rst
+++ b/doc/source/changelog.rst
@@ -11,11 +11,13 @@ This is development version ``0.2.0-dev`` of N100 SDK.
 * Application
 
   - Add an empty project for n100 sdk
+  - Add an macro ``TIMER_RELOAD`` to control ``demo_timer`` timer interrupt reload via TIME or TIMECMP
   - reset cycle and instret when start to do benchmark
 
 * NMSIS
 
   - Add ``__set_rv_instret`` and ``__set_rv_cycle`` API for N100 NMSIS Core
+  - Fix ``SysTick_Config`` API by using ``SysTick_Reload`` instead of directly set MTIMECMP register to avoid easy 24b overflow
 
 * SoC