diff --git a/CHANGELOG.md b/CHANGELOG.md
index c354b86d..325918e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 All notable changes to the Keyboard Macro Bata extension will be documented in this file.
 
 ### [Unreleased]
+- Update
+  - Updated keymap wrapper for Awesome Emacs Keymap (v0.56.0). [#326](https://github.com/tshino/vscode-kb-macro/pull/326)
 - Internal
   - Support parenthesis in when clause in wrapper keybindings generator [#296](https://github.com/tshino/vscode-kb-macro/issues/296)
 
diff --git a/keymap-wrapper/README.md b/keymap-wrapper/README.md
index 1835c766..7f78f907 100644
--- a/keymap-wrapper/README.md
+++ b/keymap-wrapper/README.md
@@ -17,7 +17,7 @@ Click the keymap wrapper link in the table below, which opens a JSON file. Copy
 | Keymap extension | Keymap wrapper | Last updated | Start recording | Stop recording | Playback |
 | ---------------- | -------------- | ------------ | ---------- | --------- | -------- |
 | [Atom Keymap](https://marketplace.visualstudio.com/items?itemName=ms-vscode.atom-keybindings) | [link](ms-vscode.atom-keybindings.json) | 2023-01-24 | `Ctrl+Alt+R` | `Ctrl+Alt+R` | `Ctrl+Alt+P` |
-| [Awesome Emacs Keymap](https://marketplace.visualstudio.com/items?itemName=tuttieee.emacs-mcx) | [link](tuttieee.emacs-mcx.json) | 2024-01-11 | `C-x S-9` | `C-x S-0` | `C-x e` |
+| [Awesome Emacs Keymap](https://marketplace.visualstudio.com/items?itemName=tuttieee.emacs-mcx) | [link](tuttieee.emacs-mcx.json) | 2024-01-13 | `C-x S-9` | `C-x S-0` | `C-x e` |
 | [Delphi Keymap](https://marketplace.visualstudio.com/items?itemName=alefragnani.delphi-keybindings) | [link](alefragnani.delphi-keybindings.json) | 2023-02-19 | `Ctrl/Cmd+Shift+R` | `Ctrl/Cmd+Shift+R` | `Ctrl/Cmd+Shift+P` |
 | [Notepad++ Keymap](https://marketplace.visualstudio.com/items?itemName=ms-vscode.notepadplusplus-keybindings) | [link](ms-vscode.notepadplusplus-keybindings.json) | 2023-01-08 | `Ctrl+Shift+R` | `Ctrl+Shift+R` | `Ctrl+Shift+P` |
 | [Sublime Text Keymap](https://marketplace.visualstudio.com/items?itemName=ms-vscode.sublime-keybindings) | [link](ms-vscode.sublime-keybindings.json) | 2023-01-08 | `Ctrl/Cmd+Q` | `Ctrl/Cmd+Q` | `Ctrl/Cmd+Shift+Q` |
diff --git a/keymap-wrapper/tuttieee.emacs-mcx.json b/keymap-wrapper/tuttieee.emacs-mcx.json
index ca4b9be2..148cdd3c 100644
--- a/keymap-wrapper/tuttieee.emacs-mcx.json
+++ b/keymap-wrapper/tuttieee.emacs-mcx.json
@@ -1,5 +1,5 @@
 [
-	// Keymap wrapper for Awesome Emacs Keymap v0.55.0
+	// Keymap wrapper for Awesome Emacs Keymap v0.56.0
 	// (required by Keyboard Macro Beta)
 	// The latest version can be found at:
 	// https://github.com/tshino/vscode-kb-macro/blob/main/keymap-wrapper/README.md
@@ -961,6 +961,16 @@
 		"when": "kb-macro.active && !editorHasSelection && editorTextFocus && !editorReadonly" },
 	{ "key": "ctrl+h", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteBackwardChar", "await": "document selection" },
 		"when": "kb-macro.active && editorTextFocus && !editorReadonly" },
+	{ "key": "alt+\\", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteHorizontalSpace", "await": "document selection" },
+		"when": "kb-macro.active && editorTextFocus && !editorReadonly && !config.emacs-mcx.useMetaPrefixMacCmd" },
+	{ "key": "cmd+\\", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteHorizontalSpace", "await": "document selection" },
+		"when": "kb-macro.active && isMac && editorTextFocus && !editorReadonly && config.emacs-mcx.useMetaPrefixMacCmd" },
+	{ "key": "alt+\\", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteHorizontalSpace", "await": "document selection" },
+		"when": "kb-macro.active && !isMac && editorTextFocus && !editorReadonly && config.emacs-mcx.useMetaPrefixMacCmd" },
+	{ "key": "escape \\", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteHorizontalSpace", "await": "document selection" },
+		"when": "kb-macro.active && editorTextFocus && !editorReadonly && config.emacs-mcx.useMetaPrefixEscape" },
+	{ "key": "ctrl+[ \\", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.deleteHorizontalSpace", "await": "document selection" },
+		"when": "kb-macro.active && editorTextFocus && !editorReadonly && config.emacs-mcx.useMetaPrefixCtrlLeftBracket" },
 	{ "key": "alt+d", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.killWord", "await": "document clipboard" },
 		"when": "kb-macro.active && editorTextFocus && !editorReadonly && !config.emacs-mcx.useMetaPrefixMacCmd" },
 	{ "key": "cmd+d", "command": "kb-macro.wrap", "args": { "command": "emacs-mcx.killWord", "await": "document clipboard" },