diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc2e60ab..e6d3f798 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [2.1.1](https://github.com/3846masa/http-cookie-agent/compare/v2.1.0...v2.1.1) (2022-05-07)
+
+
+### Bug Fixes
+
+* fix type definition for undici ([#106](https://github.com/3846masa/http-cookie-agent/issues/106)) ([4748df9](https://github.com/3846masa/http-cookie-agent/commit/4748df9317169c9c72813c514d21a9fe68c629a0))
+
 # [2.1.0](https://github.com/3846masa/http-cookie-agent/compare/v2.0.0...v2.1.0) (2022-05-06)
 
 
diff --git a/package.json b/package.json
index 0aadf658..fa3a3917 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "http-cookie-agent",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Allows cookies with every Node.js HTTP clients.",
   "keywords": [
     "agent",