diff --git a/BTCPayServer.Tests/docker-compose.yml b/BTCPayServer.Tests/docker-compose.yml
index 08f740b4f..86b5000a8 100644
--- a/BTCPayServer.Tests/docker-compose.yml
+++ b/BTCPayServer.Tests/docker-compose.yml
@@ -104,6 +104,7 @@ services:
       BITCOIN_EXTRA_ARGS: |-
         rpcuser=ceiwHEbqWI83
         rpcpassword=DwubwWsoo3
+        rpcport=43782
         rpcbind=0.0.0.0:43782
         port=39388
         whitelist=0.0.0.0/0