diff --git a/README.md b/README.md
index a936151..595d03e 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,13 @@
 
 Mini-KMS runs local written by Rust
 
+## Init
+
+New random master key:
+```shell
+head -c 32 /dev/random | base64
+```
+
 ## Generate Yubikey encrypted master key
 
 Generate encrypted master key with Yubikey: