diff --git a/README.md b/README.md
index d6b40af0..d3545007 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,10 @@ Pull the latest changes and update submodules.
 
     git pull && git submodule update --init --recursive
 
+Or use the alias:
+
+    prezto-update
+
 Usage
 -----
 
diff --git a/init.zsh b/init.zsh
index 6b5254fb..dfd97a8e 100644
--- a/init.zsh
+++ b/init.zsh
@@ -111,3 +111,6 @@ unset zfunction{s,}
 zstyle -a ':prezto:load' pmodule 'pmodules'
 pmodload "$pmodules[@]"
 unset pmodules
+
+# Set alias to update Prezto.
+alias prezto-update='(cd "${ZDOTDIR:-$HOME}/.zprezto/"; git pull && git submodule update --init --recursive)'