diff --git a/README.md b/README.md
index 94be634..1ce9e0d 100644
--- a/README.md
+++ b/README.md
@@ -328,6 +328,11 @@ defaults write com.apple.dock persistent-others -array-add '{ "tile-data" = { "l
 killall Dock
 ```
 
+#### Add a Space in Dock
+```bash
+defaults write com.apple.dock persistent-apps -array-add '{"tile-type"="spacer-tile";}'; killall Dock
+```
+
 
 ## Documents