diff --git a/Setup-guide.md b/Setup-guide.md
index 55fd8cc..d9aca8c 100644
--- a/Setup-guide.md
+++ b/Setup-guide.md
@@ -162,6 +162,8 @@ The following table describes all available environmental variables for sciNote
 | WOPI_BREADCRUMBS_HOST | No* | If using WOPI, this is the URL of sciNote server to be reachable from Microsoft Office Online. |
 | USER_SUBDOMAIN | No* | If using WOPI, the only subdomain that will be allowed to access all non-WOPI routes. |
 | WOPI_SUBDOMAIN | No* | If using WOPI, the WOPI subdomain. |
+| **Misc** | | |
+| NEW_RELIC_LICENSE_KEY | No | [New Relic](https://newrelic.com/) code metrics license key, in case you want to log code metrics with New Relic service. |
 
 ## Rake tasks