diff --git a/README.md b/README.md
index 46dff43..2248794 100644
--- a/README.md
+++ b/README.md
@@ -9,4 +9,10 @@ start server:
 connect server:
 ```
 ./easymsg client CLIENT_NAME IP:PORT
+```
+
+# how to build
+you have to install rust!
+```
+cargo build --release
 ```
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