diff --git a/CHANGELOG.md b/CHANGELOG.md
index 81f46b1..e579e70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ All notable changes to the "gpg-indicator" extension will be documented in this
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## [0.4.0] - 2021-09-12
+### Added
+- Unlock key through palette command
+- Output channel for basic logging
+### Fixed
+- Key event equality checking
+
 ## [0.3.5] - 2021-08-15
 ### Fixed
 - Fix some dependency issues
diff --git a/README.md b/README.md
index 6102c1c..6045c64 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,10 @@ You can also also unlock the key by clicking the status bar element. :D
 
 ![stats bar sample](./images/status-bar.png)
 
+Or unlock the key through command palette.
+
+![unlock command sample](./images/unlock-key-command.png)
+
 ## Features
 
 This extension will show the status of GPG signing key in status bar if your local
@@ -62,6 +66,10 @@ and the key ID is the hex string after the algorithm identifier.
 
 ## Release Notes
 
+### 0.4.0
+
+Unlock key through command palette directly (by MatthewCash), and minor bug fix.
+
 ### 0.3.5
 
 Fix some dependency issues
diff --git a/images/unlock-key-command.png b/images/unlock-key-command.png
new file mode 100644
index 0000000..2dc4ed8
Binary files /dev/null and b/images/unlock-key-command.png differ
diff --git a/package-lock.json b/package-lock.json
index 897839d..5770446 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
 	"name": "gpg-indicator",
-	"version": "0.3.5",
+	"version": "0.4.0",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {
diff --git a/package.json b/package.json
index 3644752..8d46c21 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
 		"name": "Weida Hong",
 		"url": "https://blog.bitisle.net"
 	},
-	"version": "0.3.5",
+	"version": "0.4.0",
 	"publisher": "wdhongtw",
 	"engines": {
 		"vscode": "^1.45.0"