diff --git a/CHANGELOG.md b/CHANGELOG.md
index d988fbb..af71317 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 
   **Upgrade note:**
     1. Use column name as unique key name for mysql
+    2. Drop support for Python3.7
 
 ## 0.7