diff --git a/BUILD.md b/BUILD.md
index 48f16be..b39a73b 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -277,9 +277,18 @@ test it.
 1. Install the `.rpm` package you just copied
 
    ```sh
+   sudo dnf install 'dnf-command(config-manager)'
+   sudo dnf config-manager --add-repo=https://packages.freedom.press/yum-tools-prod/dangerzone/dangerzone.repo
    sudo dnf install ~/QubesIncoming/dz/*.rpm
    ```
 
+   In the above steps, we add the Dangerzone repo because it includes the
+   necessary PySide6 RPM in order to make Dangerzone work.
+
+   > [!NOTE]
+   > During the installation, you will be asked to
+   > [verify the Dangerzone GPG key](INSTALL.md#verifying-dangerzone-gpg-key).
+
 2. Shutdown the `fedora-40-dz` template
 
 ### Developing Dangerzone