# How to generate a SSL self-signed Certificate with a longer expiry date

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## Purpose

By default, All the self-signed certificate only valid for 90 days, then you will need to renew them every 90 days, which is very troublesome.

## Solution

Run the following command (where validity is the number of days before the certificate will expire):

keytool -genkey -keyalg RSA -alias selfsigned -keystore keystore.jks -storepass password -validity 360 -keysize 2048

For additional details see: How to create a self signed certificate using Java Key Tool