diff --git a/README.md b/README.md
index ab594d8..bb43eb5 100644
--- a/README.md
+++ b/README.md
@@ -143,3 +143,5 @@ Help Options:
 # License
 
 MIT
+
+This library embeds and uses `graphviz.wasm`, which is generated based on the original source code of Graphviz. Therefore, the `graphviz.wasm` follows [the license adopted by Graphviz](https://graphviz.org/license) ( Eclipse Public License ).