diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8ac56f95..49eabe22c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+- 2.2.1
+    - Fix Extra Tree divide by zero when split finding
+
 - 2.2.0
     - Added Image Rotator transformer
     - Added One Vs Rest ensemble classifier