diff --git a/scripts/upgrade b/scripts/upgrade
index ac175e5..3b84065 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -30,7 +30,7 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=1
 
 	# Download, check integrity, uncompress and patch the source from manifest.toml
-	ynh_setup_source --dest_dir="$install_dir"
+	ynh_setup_source --dest_dir="$install_dir" --keep="id_ed25519.pub id_ed25519"
 fi
 
 chmod -R o-rwx "$install_dir"