diff --git a/packages/ckeditor5/src/augmentation.ts b/packages/ckeditor5/src/augmentation.ts
index c7a2a12fe..c34f07e66 100644
--- a/packages/ckeditor5/src/augmentation.ts
+++ b/packages/ckeditor5/src/augmentation.ts
@@ -23,6 +23,8 @@ declare global {
     }
 }
 
+type Keystroke = string | string[];
+
 declare module "ckeditor5" {
     interface Editor {
         getSelectedHtml(): string;
@@ -37,10 +39,10 @@ declare module "ckeditor5" {
             enabled: boolean;
         },
         moveBlockUp?: {
-            keystroke: string;
+            keystroke: Keystroke;
         },
         moveBlockDown?: {
-            keystroke: string;
+            keystroke: Keystroke;
         },
         clipboard?: {
             copy(text: string): void;
diff --git a/packages/ckeditor5/src/plugins/move_block_updown.ts b/packages/ckeditor5/src/plugins/move_block_updown.ts
index ef4f6a8dd..580c8dbe4 100644
--- a/packages/ckeditor5/src/plugins/move_block_updown.ts
+++ b/packages/ckeditor5/src/plugins/move_block_updown.ts
@@ -9,20 +9,21 @@ export default class MoveBlockUpDownPlugin extends Plugin {
     init() {
         const editor = this.editor;
         editor.config.define('moveBlockUp', {
-            keystroke: 'ctrl+arrowup',
+            keystroke: ['ctrl+arrowup', 'alt+arrowup'],
         });
         editor.config.define('moveBlockDown', {
-            keystroke: 'ctrl+arrowdown',
+            keystroke: ['ctrl+arrowdown', 'alt+arrowdown'],
         });
 
-        const keystrokeUp = editor.config.get('moveBlockUp.keystroke')!;
-        const keystrokeDown = editor.config.get('moveBlockDown.keystroke')!;
-
         editor.commands.add('moveBlockUp', new MoveBlockUpCommand(editor));
         editor.commands.add('moveBlockDown', new MoveBlockDownCommand(editor));
 
-        editor.keystrokes.set(keystrokeUp, 'moveBlockUp');
-        editor.keystrokes.set(keystrokeDown, 'moveBlockDown');
+        for (const keystroke of editor.config.get('moveBlockUp.keystroke') ?? []) {
+            editor.keystrokes.set(keystroke, 'moveBlockUp');
+        }
+        for (const keystroke of editor.config.get('moveBlockDown.keystroke') ?? []) {
+            editor.keystrokes.set(keystroke, 'moveBlockDown');
+        }
     }
 
 }