diff --git a/test_directory/sub_dir/sub_test.txt b/test_directory/sub_dir/sub_test.txt
new file mode 100644
index 0000000..12c517e
--- /dev/null
+++ b/test_directory/sub_dir/sub_test.txt
@@ -0,0 +1 @@
+sub_test
\ No newline at end of file