CHANGELOG.md in blind_index-2.3.0 vs CHANGELOG.md in blind_index-2.3.1

@@ -1,4 +1,8 @@
+## 2.3.1 (2022-09-06)
+
+- Fixed error with `backfill` when `bidx_attribute` is a symbol
+
 ## 2.3.0 (2022-01-16)
 
 - Added blind indexes to `filter_attributes`
 - Dropped support for Ruby < 2.6 and Rails < 5.2