diff --git a/README.md b/README.md
index 718e061..e33757e 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
 # pinentry-cli-java
 
-pinentry-cli Java lib
\ No newline at end of file
+pinentry-cli Java lib
+
+
+Require `pinentry-cli` installed:
+```shell
+cargo install --git https://git.hatter.ink/hatter/pinentry-cli.git
+```