diff --git a/README.md b/README.md
index 5cd02eb..9d46979 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # re2-js-generator
 
+## Requires
+ - node
+ - npm
+ - re2c
+
 ## Install
 You need install npm and node v.10;