diff --git a/CHANGELOG.md b/CHANGELOG.md
index 059ce5b..00f68c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 
+## 0.4.0
+Changes
+- Support billing_group apis
+
 ## 0.3.0
 Changes:
 - Support account, tickets and mirror-maker apis.
@@ -9,17 +13,14 @@ Changes:
 - Use async-compat to run reqwest on other executors
 
 ## 0.2.2
-
 Changes:
 - Upgraded smol example
 
 ## 0.2.1
-
 Changes:
 - Fixed the smol example
 
 ## 0.2.0
-
 Changes:
 - Made user::types public 
 - Fixed user::create doc test w.r.t types import path
diff --git a/Cargo.toml b/Cargo.toml
index 70b1fc5..f547e87 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ license = "MIT"
 name = "aiven_rs"
 readme = "README.md"
 repository = "https://github.com/ansrivas/aiven-rs"
-version = "0.3.0"
+version = "0.4.0"
 include = [
     "**/*.rs",
     "Cargo.toml",
diff --git a/README.md b/README.md
index 37f36d5..417f575 100644
--- a/README.md
+++ b/README.md
@@ -20,15 +20,14 @@
 ## Resources
 
 - Build Status on other [platforms](./BUILD_STATUS.md)
-- Majority of the end points from https://api.aiven.io/doc/ have been implemented as of [17.04.2020]
+- Majority of the end points from https://api.aiven.io/doc/ have been implemented as of [07.01.2021]
 - [Documentation](https://docs.rs/aiven-rs)
-- Minimum supported Rust version: 1.42 or later
 
 ## Getting Started
 
 ```rust
-// tokio = "0.2"
-// aiven_rs = "0.3.0"
+// tokio = "1.0"
+// aiven_rs = "0.4.0"
 
 use aiven_rs::{cloud::types::ResClouds, AivenClient};
 
@@ -48,9 +47,7 @@ async fn main() {
   }
 }
 ```
-
 ## License
 
 This project is licensed under
-
 - MIT license ([LICENSE-MIT](LICENSE) or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT))
diff --git a/src/lib.rs b/src/lib.rs
index fe2ddc9..03447ff 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -53,7 +53,6 @@ pub mod cloud;
 pub mod key_mgmt;
 pub mod payment;
 pub mod project;
-mod response;
 pub mod service;
 mod testutil;
 pub mod ticket;