diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 36bd011..f6ffd79 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -23,6 +23,8 @@ For the Gtk based app:
 sudo dnf install just gtk4-devel libadwaita-devel
 ```
 
+And you have to install [blueprint-compiler](https://jwestman.pages.gitlab.gnome.org/blueprint-compiler/setup.html).
+
 ## Development
 
 You can run the app with