diff --git a/.env.example b/.env.example
index 50bb0c97b..f0e7c6e41 100644
--- a/.env.example
+++ b/.env.example
@@ -9,9 +9,13 @@ PORT=5000
 LNBITS_ALLOWED_USERS=""
 LNBITS_DEFAULT_WALLET_NAME="LNbits wallet"
 
-# Database: by default we will use SQLite, but you can replace that with a Postgres URL
+# Database: to use SQLite, specify LNBITS_DATA_FOLDER
+#           to use PostgreSQL, specify LNBITS_DATABASE_URL=postgres://...
+#           to use CockroachDB, specify LNBITS_DATABASE_URL=cockroachdb://...
+# for both PostgreSQL and CockroachDB, you'll need to install
+#   psycopg2 as an additional dependency
 LNBITS_DATA_FOLDER="./data"
-# LNBITS_DATABASE_URL="postgres:///"
+# LNBITS_DATABASE_URL="postgres://user:password@host:port/databasename"
 
 LNBITS_DISABLED_EXTENSIONS="amilk"
 LNBITS_FORCE_HTTPS=true