diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5347ff..efcc956 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+v1
+==
+
+uses smaller coin cell (CR1220).
+use only one type of NOR-gate.
+remove READY LED.
+
 v0
 ==