diff --git a/changelog.txt b/changelog.txt
index 8c36c30..c112d7d 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,6 @@
 
-v0.1
+v1.0
 ----
+- initial release
+- added method for reading json data from world directory
+- added method for writing json data to world directory