CHANGELOG.md in activemodel-csv_validator-0.3.0 vs CHANGELOG.md in activemodel-csv_validator-0.4.0

@@ -1,4 +1,10 @@
+## 0.4.0
+
+- Drop support ruby@2.6
+- Drop support rails@6.0
+- Proc can now be passed to `headers` option.
+
 ## 0.2.0
 
 - Drop support ruby@2.5
 - Fix keyword args warn