diff --git a/Dockerfile b/Dockerfile
index 2471dca..3e34766 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,4 +33,4 @@ ENV PYTHONPATH=/app
 
 EXPOSE 8000
 
-CMD [ "gunicorn", "-w", "1", "--bind", ":8000", "-k", "runboat.uvicorn.RunboatUvicornWorker", "--access-log=-", "runboat.app:app"]
+CMD [ "gunicorn", "-w", "1", "--bind", ":8000", "-k", "runboat.uvicorn.RunboatUvicornWorker", "--access-logfile=-", "runboat.app:app"]