diff --git a/docs/install.md b/docs/install.md
index dadb803..9fde2fb 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -195,7 +195,7 @@ ln -s /usr/share/adminer/latest.php /usr/share/adminer/adminer.php
 First, clone the Namingo registry repository into the `/opt/registry` directory:
 
 ```bash
-git clone https://github.com/getnamingo/registry /opt/registry
+git clone --branch v1.0.21 --single-branch https://github.com/getnamingo/registry /opt/registry
 ```
 
 Next, create the directory for Namingo logs. This directory will be used to store log files generated by the Namingo registry: