diff --git a/CHANGELOG.md b/CHANGELOG.md
index af7d853..1b09d0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,14 @@
+v2
+==
+
+same USB type-A plug form factor.
+change MCU to STM32F042 since it provides read out protection.
+
 v1
 ==
 
 smaller form factor.
-fits in USB A port.
+fits in USB type-A port.
 uses CH32V203 as it is smaller, cheaper, and requires less external parts (DP pull-up, crystal).
 
 v0