diff --git a/README.md b/README.md
index 503ad26b..cb4194f4 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 |Version|Build|Coverage|Docs|
 |---|---|---|---|
-|![](https://img.shields.io/badge/Release-v2.0.0_(has_some_issues)-yellow.svg?style=flat-square)|[![CI](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml/badge.svg)](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml)|![](https://img.shields.io/badge/coverage-upstream_issue-inactive.svg?style=flat-square)|[![](https://img.shields.io/badge/Docs-Scaladoc_&_REST_API-blue?style=flat-square)](https://yoshinorin.github.io/qualtet/docs)|
+|![](https://img.shields.io/badge/Release-v2.1.0_(has_some_issues)-yellow.svg?style=flat-square)|[![CI](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml/badge.svg)](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml)|![](https://img.shields.io/badge/coverage-upstream_issue-inactive.svg?style=flat-square)|[![](https://img.shields.io/badge/Docs-Scaladoc_&_REST_API-blue?style=flat-square)](https://yoshinorin.github.io/qualtet/docs)|
 |![](https://img.shields.io/badge/Release-v1.13.0_(stale)-inactive.svg?style=flat-square)|[![CI](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml/badge.svg?branch=v1.x)](https://github.com/yoshinorin/qualtet/actions/workflows/ci.yml)|[![Coverage Status](https://coveralls.io/repos/github/yoshinorin/qualtet/badge.svg?branch=v1.x)](https://coveralls.io/github/yoshinorin/qualtet?branch=v1.x)|![](https://img.shields.io/badge/Docs-N/A-inactive.svg?style=flat-square)|
 
 
diff --git a/build.sbt b/build.sbt
index c84d60dd..d894aadd 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ import scala.sys.process.Process
 
 organization := "net.yoshinorin"
 name := "qualtet"
-version := "v2.0.0"
+version := "v2.1.0"
 scalaVersion := "3.2.1"
 
 scalacOptions ++= Seq(
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 87a32e04..f8f74fa8 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -10,7 +10,7 @@ RUN apt update -y \
 
 WORKDIR /usr/opt
 
-RUN git clone --depth 1 --branch v2.0.0 https://github.com/yoshinorin/qualtet.git
+RUN git clone --depth 1 --branch v2.1.0 https://github.com/yoshinorin/qualtet.git
 
 WORKDIR /usr/opt/qualtet
 
@@ -18,7 +18,7 @@ COPY entry-point.sh entry-point.sh
 
 RUN rm -rf scripts docs docker .github .gitignore .editorconfig .git .env .env.example \
   && sbt assembly exit \
-  && cp ./target/scala-3.2.1/qualtet-assembly-v2.0.0.jar qualtet-assembly.jar \
+  && cp ./target/scala-3.2.1/qualtet-assembly-v2.1.0.jar qualtet-assembly.jar \
   && chmod +x entry-point.sh
 
 ENTRYPOINT [ "/usr/opt/qualtet/entry-point.sh" ]
diff --git a/docs/rest-api/openapi.yml b/docs/rest-api/openapi.yml
index 248ba521..f62ffcd7 100644
--- a/docs/rest-api/openapi.yml
+++ b/docs/rest-api/openapi.yml
@@ -4,7 +4,7 @@ info:
   description: |
     # Description
     This API documentation regarding OpenAPI specification. Generated by [ReDoc](https://github.com/Rebilly/ReDoc).
-  version: v2.0.0
+  version: v2.1.0
 externalDocs:
   description: Source code
   url: 'https://github.com/yoshinorin/qualtet'