diff --git a/README.md b/README.md
index c85a067..7624f2f 100755
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Production ready.
 ## Installation
 
 * Install [corral](https://github.com/ponylang/corral)
-* `corral add github.com/ponylang/crypto.git --version 1.2.2`
+* `corral add github.com/ponylang/crypto.git --version 1.2.3`
 * `corral fetch` to fetch your dependencies
 * `use "crypto"` to include this package
 * `corral run -- ponyc` to compile your application