diff --git a/scripts/install b/scripts/install
index 3984b47..a845645 100644
--- a/scripts/install
+++ b/scripts/install
@@ -109,7 +109,8 @@ ynh_setup_source --dest_dir=$tempdir --source_id=$architecture
 
 chmod 755 $install_dir
 
-ynh_exec_warn_less dpkg -i $tempdir/$gitlab_filename
+# https://docs.gitlab.com/omnibus/settings/configuration.html#specify-the-external-url-at-the-time-of-installation
+ynh_exec_warn_less EXTERNAL_URL="$generated_external_url" dpkg -i $tempdir/$gitlab_filename
 
 ynh_secure_remove --file="$tempdir"