diff --git a/README.md b/README.md
index 9d50afe..4f45388 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,8 @@
-プチ論について作っていきます。
-どうぞご自由にご覧ください、意見ください
-実行できるかは知らーーーーん
+web/map/lib
+============
+This directory contains third party's libraries such as Leaflet.
+
+|Library			|Version
+|-------------------|--------
+|Leaflet			| 1.5.1
+|leaflet-omnivore	| master as of 2019-07-08