diff --git a/CHANGELOG.md b/CHANGELOG.md
index f1c5c92..a93f505 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.0] - 2025-01-06
+
 - Change `strongest` property type from `Array<IntegrityMetadata>` to `IntegrityMetadataSet`
 - Improve documentation
 
@@ -28,8 +30,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - First release
 
+[1.0.0]: https://github.com/kou029w/websri/compare/v0.1.0...v1.0.0
 [0.1.0]: https://github.com/kou029w/websri/compare/v0.0.3...v0.1.0
 [0.0.3]: https://github.com/kou029w/websri/compare/v0.0.2...v0.0.3
 [0.0.2]: https://github.com/kou029w/websri/compare/v0.0.1...v0.0.2
 [0.0.1]: https://github.com/kou029w/usri/releases/tag/v0.0.1
-[unreleased]: https://github.com/kou029w/websri/compare/v0.1.0...HEAD
+[unreleased]: https://github.com/kou029w/websri/compare/v1.0.0...HEAD
diff --git a/package-lock.json b/package-lock.json
index 3ee6c73..bee38eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "websri",
-  "version": "0.1.0",
+  "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "websri",
-      "version": "0.1.0",
+      "version": "1.0.0",
       "license": "MIT",
       "devDependencies": {
         "@release-it/keep-a-changelog": "5.0.0",
diff --git a/package.json b/package.json
index 4f5d068..1b449aa 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "websri",
-  "version": "0.1.0",
+  "version": "1.0.0",
   "description": "A universal Subresource Integrity (SRI) utility for Node.js, browsers, Cloudflare Workers, Deno, Bun, and other web-compatible runtimes.",
   "license": "MIT",
   "author": "Kohei Watanabe <nebel@fogtype.com>",