diff --git a/.gitignore b/.gitignore
index 501a2c3..5fc3fc1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ config.yml
 ncp
 bin
 coverage.txt
+dist
 
 /log/*
 !/log/.keep
diff --git a/CHANGELOG.md b/CHANGELOG.md
index da2073e..e130107 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,34 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.4.0] - 2023-04-06
+
+### Add
+
+* releaser deb
+* add exec
+
+exec system command. **NOTE: This is very dangerous!**
+
+```yaml
+  - type: exec
+    params: "echo"
+    i_rules:
+      - regexp: '.*"method": ?"exec".*'
+    o_rules:
+      - regexp: '.*'
+```
+
+This `params` is command, example: `params: "/bin/sh"`
+
+This Recvice JSONRPC, ignore `jsonrpc.method`. **jsonrpc.method is use of only match**
+
+For example:
+
+`params: "echo"`. jsonrpc2 `{"jsonrpc":"2.0","method":"exec","params":["-n", "xxx"],"id":"x"}`
+
+Finally exec: `echo -n xxx`
+
 ## [2.3.0] - 2022-12-29
 
 ### Add
diff --git a/README.md b/README.md
index 77702b8..9c7b69d 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,7 @@ Type                 | Description
 [API](#api)          | build-in interface
 [tcpc](#tcpc)        | TCP socket client
 [tcps](#tcps)        | TCP socket server
+[exec](#exec)        | Execute system command
 [jsonrpc2](#jsonrpc2)| JSONRPC 2.0 simulation
 [logger](#logger)    | Record message log
 [mqtt](#mqtt)        | Connect Mqtt Broker
diff --git a/README_zh.md b/README_zh.md
index d1a909f..ed644d0 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -143,6 +143,7 @@ Type                 | Description
 [API](#api)          | build-in interface
 [tcpc](#tcpc)        | TCP socket client
 [tcps](#tcps)        | TCP socket server
+[exec](#exec)        | Execute system command
 [jsonrpc2](#jsonrpc2)| JSONRPC 2.0 simulation
 [logger](#logger)    | Record message log
 [mqtt](#mqtt)        | Connect Mqtt Broker