diff --git a/external-sites.json b/external-sites.json
new file mode 100644
index 0000000..81251dc
--- /dev/null
+++ b/external-sites.json
@@ -0,0 +1,3 @@
+{
+  "/": "https://join.slack.com/t/videojs/shared_invite/zt-5jv0gmb5-4y1KUyNLDDhTyeDKE1ENcA"
+}