Updated golang tools (markdown)
diff --git a/golang-tools.md b/golang-tools.md
index 6ac4fe6..fbba7e1 100644
--- a/golang-tools.md
+++ b/golang-tools.md
@@ -2,6 +2,8 @@
In addition to the mailing list, there is discussion in the `#tools` channel on [Gophers Slack](https://gophers.slack.com) ([sign-up here](https://invite.slack.golangbridge.org)).
+The mailing list and Slack channels are open to everyone.
+
### Fortnightly catch-up calls
We currently (correct as of Nov 2018) hold fortnightly catch-up calls. These calls are open to everyone. For those not able to join, notes and a recording of discussion are made available after each session.
