Update README.md

Author: gianlucam76

README.md

@@ -1,6 +1,6 @@
 [![CI](https://github.com/projectsveltos/sveltos-manager/actions/workflows/main.yaml/badge.svg)](https://github.com/projectsveltos/sveltos-manager/actions)
 [![Go Report Card](https://goreportcard.com/badge/github.com/projectsveltos/sveltos-manager)](https://goreportcard.com/report/github.com/projectsveltos/sveltos-manager)
-[![Slack](https://img.shields.io/badge/join%20slack-%23projectsveltos-brighteen)](http://projectsveltos.slack.com/)
+[![Slack](https://img.shields.io/badge/join%20slack-%23projectsveltos-brighteen)](https://join.slack.com/t/projectsveltos/shared_invite/zt-1hraownbr-W8NTs6LTimxLPB8Erj8Q6Q)
 [![License](https://img.shields.io/badge/license-Apache-blue.svg)](LICENSE)
 
 # Sveltos
@@ -424,7 +424,7 @@ Test status:
 ## Contributing [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/projectsveltos/sveltos-manager/issues)
 If you have questions, noticed any bug or want to get the latest project news, you can connect with us in the following ways:
 1. Open a bug/feature enhancement on github;
-2. Chat with us on the Slack in the [#projectsveltos](http://projectsveltos.slack.com/) channel
+2. Chat with us on the Slack in the [#projectsveltos](https://join.slack.com/t/projectsveltos/shared_invite/zt-1hraownbr-W8NTs6LTimxLPB8Erj8Q6Q) channel
 
 ## License