diff --git a/crawlers/sample.env b/crawlers/sample.env
index e6946b01..acbc1736 100644
--- a/crawlers/sample.env
+++ b/crawlers/sample.env
@@ -2,3 +2,4 @@
 export MOONSTREAM_IPC_PATH=null
 export MOONSTREAM_CRAWL_WORKERS=4
 export MOONSTREAM_DB_URI="postgresql://<username>:<password>@<db_host>:<db_port>/<db_name>"
+export MOONSTREAM_HUMBUG_TOKEN="<Token for crawlers store data via Humbug>"