diff --git a/.env.sample b/.env.sample
index d09478f..5b43341 100644
--- a/.env.sample
+++ b/.env.sample
@@ -59,3 +59,6 @@ LOG_LEVEL=WARN
 
 ## "Headless mode" (no domain configured)
 #COMPOSE_FILE="compose.yml:compose.headless.yml"
+## Mumble
+#COMPOSE_FILE="$COMPOSE_FILE:compose.mumble.yml"
+#MUMBLE_ENABLED=1