diff --git a/Environment-Variables.md b/Environment-Variables.md
index 8ae8972..23817c0 100644
--- a/Environment-Variables.md
+++ b/Environment-Variables.md
@@ -23,4 +23,5 @@ SASS                      - Set the absolute path to the sass binary location
 HTTP_PROXY                - Use a HTTP Proxy for HTTP Requests
 AUTH_USERNAME             - HTTP Basic Authentication username
 AUTH_PASSWORD             - HTTP Basic Authentication password
+BASE_PATH                 - Set the base URL prefix (set to 'monitor' if URL is domain.com/monitor)
 ```
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