diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64c0cbce..627e23c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.9.0 (TBD)
+
+BREAKING CHANGES:
+ - [types] ResponseEndBlock: renamed Diffs field to ValidatorSetUpdates
+
+FEATURES:
+ - [types] ResponseEndBlock: added ConsensusParamUpdates
+
 ## 0.8.0 (December 6, 2017)
 
 BREAKING CHANGES: