diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6d9e5fc..2c543c4 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.20.0"
+  ".": "1.21.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 41e3ae0..3d32842 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.21.0](https://github.com/devy1540/devy1540.github.io/compare/v1.20.0...v1.21.0) (2026-06-23)
+
+
+### 새로운 기능
+
+* **series:** 시리즈 메뉴 탐색 경험 개선 ([96af037](https://github.com/devy1540/devy1540.github.io/commit/96af0373ca45f5f5bbbae0d79c982cbd7294f535))
+
 ## [1.20.0](https://github.com/devy1540/devy1540.github.io/compare/v1.19.0...v1.20.0) (2026-06-23)
 
 
diff --git a/package-lock.json b/package-lock.json
index 0a422ec..bdc8ff3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "devy1540",
-  "version": "1.20.0",
+  "version": "1.21.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "devy1540",
-      "version": "1.20.0",
+      "version": "1.21.0",
       "dependencies": {
         "@giscus/react": "^3.1.0",
         "@react-pdf/renderer": "^4.3.2",
diff --git a/package.json b/package.json
index 63ad5d8..9a91018 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "devy1540",
   "private": true,
-  "version": "1.20.0",
+  "version": "1.21.0",
   "type": "module",
   "scripts": {
     "dev": "vite",