diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5463800a..b0ca1a79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 2.1.0 [unreleased]
+## 2.1.0 [2021-10-22]
 
 ### Features
 1. [#93](https://github.com/influxdata/influxdb-client-ruby/pull/93): Add `PingApi` to check status of OSS and Cloud instance
diff --git a/README.md b/README.md
index 38a74379..2ce84ef0 100644
--- a/README.md
+++ b/README.md
@@ -64,13 +64,13 @@ The client can be installed manually or with bundler.
 To install the client gem manually:
 
 ```
-gem install influxdb-client -v 2.0.0
+gem install influxdb-client -v 2.1.0
 ```
 
 For management API:
 
 ```
-gem install influxdb-client-apis -v 2.0.0
+gem install influxdb-client-apis -v 2.1.0
 ```
 
 ## Usage