diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0510c2a7..114ef0ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.1.0](https://github.com/MikuroXina/mini-fn/compare/v5.0.0...v5.1.0) (2023-09-29)
+
+
+### Features
+
+* Add Traversal and Bitraversal optical ([#118](https://github.com/MikuroXina/mini-fn/issues/118)) ([9c9558c](https://github.com/MikuroXina/mini-fn/commit/9c9558cbbdb9a1f9fb74c814867deec6edfffae6))
+
 ## [5.0.0](https://github.com/MikuroXina/mini-fn/compare/v5.0.0...v5.0.0) (2023-09-21)
 
 
diff --git a/package.json b/package.json
index 5381bddf..373c49f4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@mikuroxina/mini-fn",
-    "version": "5.0.0",
+    "version": "5.1.0",
     "description": "The minimal functional programming library.",
     "files": [
         "dist"