diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ecc30f..f4df27b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## [v0.3.1](https://github.com/johnmanjiro13/tokio-fluent/compare/v0.3.0...v0.3.1) - 2023-01-20
+- Revert "test: read_ack" by @johnmanjiro13 in https://github.com/johnmanjiro13/tokio-fluent/pull/15
+
 ## [v0.3.0](https://github.com/johnmanjiro13/tokio-fluent/compare/v0.2.1...v0.3.0) - 2023-01-19
 - Add timeout option by @johnmanjiro13 in https://github.com/johnmanjiro13/tokio-fluent/pull/10
 - Add retry option by @johnmanjiro13 in https://github.com/johnmanjiro13/tokio-fluent/pull/11
diff --git a/Cargo.toml b/Cargo.toml
index e487cd1..57210c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tokio-fluent"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["johnmanjiro13"]
 edition = "2021"
 description = "A fluentd client using tokio"
diff --git a/README.md b/README.md
index c0d5f89..b8a26c9 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ Add this to your `Cargo.toml`
 
 ```toml
 [dependencies]
-tokio-fluent = "0.3.0"
+tokio-fluent = "0.3.1"
 ```
 
 ## Example