diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f46c55..0654734 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 0.3.1 (16.04.2024)
+- [Use case format error](https://github.com/kommitters/bas/issues/22)
+
 ## 0.3.0 (16.04.2024)
 - [Rename the Fetcher to Read](https://github.com/kommitters/bas/issues/13)
 - [Rename the Mapper to Serialize](https://github.com/kommitters/bas/issues/14)
diff --git a/lib/bas/version.rb b/lib/bas/version.rb
index 0159ef8..32850ba 100644
--- a/lib/bas/version.rb
+++ b/lib/bas/version.rb
@@ -2,5 +2,5 @@
 
 module Bas
   # Gem version
-  VERSION = "0.3.0"
+  VERSION = "0.3.1"
 end