diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72f2792..5b5aa8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 - Use `.sql` instead of `.json` to store version file.
 - Add `rename` column support MySQL5.
+- Remove callable detection for defaults. (#87)
 
 ## 0.3
 
diff --git a/README.md b/README.md
index 2868a7a..19cdbc0 100644
--- a/README.md
+++ b/README.md
@@ -111,8 +111,6 @@ Format of migrate filename is
 
 And if `aerich` guess you are renaming a column, it will ask `Rename {old_column} to {new_column} [True]`, you can choice `True` to rename column without column drop, or choice `False` to drop column then create.
 
-If you use `MySQL`, only MySQL8.0+ support `rename..to` syntax.
-
 ### Upgrade to latest version
 
 ```shell