diff --git a/CHANGELOG.md b/CHANGELOG.md
index 07a0085..12a7171 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # aspeak Changelog
 
+# v4.3.0-beta.1
+
+- Add support for http and socks5 proxy. Command line option `--proxy` and environment variable `http_proxy`(or `HTTP_PROXY`) are available.
+  - Example: `aspeak --proxy "socks5://127.0.0.1:7890" text "Hello World"`
+  - You can also set the proxy in the `auth` section in your profile.
+  - By now, connection to https proxy server is not supported!
+  - For python binding, use the `proxy` keyword argument in the `SpeechService` constructor.
+
 # v4.2.0
 
 - Show detailed error message in python bindings.
diff --git a/Cargo.lock b/Cargo.lock
index 0dadf54..2525374 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -71,7 +71,7 @@ checksum = "8da52d66c7071e2e3fa2a1e5c6d088fec47b593032b254f5e980de8ea54454d6"
 
 [[package]]
 name = "aspeak"
-version = "4.2.0"
+version = "4.3.0-beta.1"
 dependencies = [
  "chrono",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index aa3b40c..79f982d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aspeak"
-version = "4.2.0"
+version = "4.3.0-beta.1"
 edition = "2021"
 authors = ["kxxt <rsworktech@outlook.com>"]
 description = "A simple text-to-speech client for Azure TTS API."