diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89e486c..c729f68 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+unreleased
+------------------
+* Fix the incorrect type definition
+
 1.6.0 / 2017-02-05
 ------------------
 * Add user-defined plugin support #22