diff --git a/README.md b/README.md
index 4030221..e1058bf 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Gemini Protocol library for PHP 8
 ## Install
 
 1. `composer require yggverse/titan-ii`
-2. `openssl req -x509 -newkey rsa:4096 -keyout key.rsa -out cert.pem -days 3650 -nodes -subj "/CN=IP"`
+2. `openssl req -x509 -newkey rsa:4096 -keyout key.rsa -out cert.pem -days 1 -nodes -subj "/CN=IP"`
 3. `php server.php`
 4. `gemini://[IP]`