diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a60daca46..54999e01ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+v0.22.1 - _October 19, 2017_
+------------------------
+    * Reduced bundle size by 11% 82kB (#195)
+
 v0.22.0 - _October 16, 2017_
 ------------------------
     * Started using `OrderFillRequest` interface instead of `OrderFillOrKillRequest` interface for `zeroEx.exchange.batchFillOrKill` (#187)