diff --git a/README.md b/README.md
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@@ -25,6 +25,9 @@ The future versions of this tool will be more generalized, allowing users to bui
 
 See [Build your first Ubuntu Core image](https://ubuntu.com/core/docs/build-an-image) for instructions on how to use ubuntu-image to build an Ubuntu core image on a **Raspberry Pi**.
 
+> [!IMPORTANT] 
+> `ubuntu-image` requires **elevated permissions**. Run it with **root** privileges or using `sudo`.
+
 ## Building images
 
 ubuntu-image offers two basic sub-commands for building snap-based and classical images.