From 6590875a1a0aa539737d9026dd1995edab27bc98 Mon Sep 17 00:00:00 2001
From: Brad Warren <bmw@users.noreply.github.com>
Date: Thu, 4 Apr 2019 13:30:38 -0700
Subject: mattermost > irc (#6916)

---
 docs/contributing.rst | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/docs/contributing.rst b/docs/contributing.rst
index 264db630f..b69b5c43f 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -369,9 +369,11 @@ Asking for help
 ===============
 
 If you have any questions while working on a Certbot issue, don't hesitate to
-ask for help! You can do this in the #letsencrypt-dev IRC channel on Freenode.
-If you don't already have an IRC client set up, we recommend you join using
-`Riot <https://riot.im/app/#/room/#freenode_#letsencrypt-dev:matrix.org>`_.
+ask for help! You can do this in the Certbot channel in EFF's Mattermost
+instance for its open source projects. To join, `create an account
+<https://opensource.eff.org/signup_user_complete/?id=6iqur37ucfrctfswrs14iscobw>`_
+and then visit the `Certbot channel
+<https://opensource.eff.org/eff-open-source/channels/certbot>`_.
 
 Updating certbot-auto and letsencrypt-auto
 ==========================================
-- 
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