diff --git a/scripts/upgrade b/scripts/upgrade
index 4a88d25..43effd3 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -48,7 +48,7 @@ fi
 if [ -f "$install_dir/requirements.txt" ]; then
 	mkdir "$install_dir/sources"
 	# Move to $install_dir/sources
-	find "$install_dir" -maxdepth 1 -mindepth 1 -not -name sources -exec mv {} "$install_dir/sources" +
+	find "$install_dir" -maxdepth 1 -mindepth 1 -not -name sources -exec mv -t "$install_dir/sources" {} +
 	mv "$install_dir/sources/envs" "$install_dir"
 fi