diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a850a1..c24243b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Changelog
 
 ## 0.6.x
+### 0.6.3a1
+- Adding postfix a to indicate alpha version, making it clear that it is in an early state
+
 ### 0.6.2
 - Version on pypi.
 - .1 and .2 have no change, but had to republish the file, which required to increase the version number.