diff --git a/UPGRADING.md b/UPGRADING.md
index 1263f81..0db9ed6 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -1,3 +1,7 @@
+## 2.6.1
+
+- Add missing classes in default themes (#127)
+
 ## 2.6.0
 
 - Add Python support (#121)