diff --git a/21/473ea7f1eb6adb423c8a0a5034201503c8624b b/21/473ea7f1eb6adb423c8a0a5034201503c8624b
new file mode 100644
index 00000000000..7ca223022e6
--- /dev/null
+++ b/21/473ea7f1eb6adb423c8a0a5034201503c8624b
@@ -0,0 +1 @@
+Author: https://github.com/vkoskiv