diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3692fc..38623e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [1.1.1](https://github.com/uhyo/rocon/compare/v1.1.0...v1.1.1) (2020-12-04)
+
+
+### Bug Fixes
+
+* fix type errors in TS 4.1 ([cabfeb8](https://github.com/uhyo/rocon/commit/cabfeb8b9d715f040b04925f4ffed91296a7ebfa))
+
 ## [1.1.0](https://github.com/uhyo/rocon/compare/v1.0.0...v1.1.0) (2020-10-17)
 
 
diff --git a/package-lock.json b/package-lock.json
index d34999b..f0c3402 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "rocon",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 590438e..85cd535 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rocon",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "A router library",
   "main": "lib/index.js",
   "module": "esm/index.js",