diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
index 3730ca9..a3dbd34 100644
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -36,6 +36,11 @@ services:
       # will successfully connect (the reconnect loop retries every 5s).
       NOSTR_TRANSPORT_ENABLED: "true"
       NOSTR_TRANSPORT_RELAYS: '["ws://localhost:5001/nostrrelay/test"]'
+      # Auto-credit 1M sats to freshly-created accounts. Required by the
+      # transport-driver `--flow subscribe` end-to-end test which pays a
+      # FakeWallet invoice between two newly created wallets. Gated to
+      # FakeWallet + this explicit opt-in (see lnbits/core/services/users.py).
+      LNBITS_DEMO_MODE: "true"
     ports:
       - 5001:5001
     volumes: