diff --git a/README.md b/README.md
index 31415b2..a137869 100644
--- a/README.md
+++ b/README.md
@@ -7,15 +7,19 @@ Open Proxmox Web Console -> Datacenter > NAME OF YOUR HOST > Shell.
 Copy, paste and execute (code below).
 
 Voilà, install macOS! This is really and magic **easiest way**!
-
 ![osx-proxmox](https://user-images.githubusercontent.com/23700365/170728118-a59ef7ee-19ee-42bb-8682-2c74f2412aa7.png)
-
 ## COPY & PASTE - in shell of Proxmox (for Install or Update this solution)
 
 ```
 /bin/bash -c "$(curl -fsSL https://install.osx-proxmox.com)"
 ```
 
+## For install EFI Package in macOS, first disable Gatekeeper
+
+```
+sudo spctl --master-disable
+```
+
 ## Versions of macOS Supported
 * macOS High Sierra - 10.13
 * macOS Mojave - 10.14