diff --git a/docker/configure_workers_and_start.py b/docker/configure_workers_and_start.py
index 401f240392..d42cc07611 100755
--- a/docker/configure_workers_and_start.py
+++ b/docker/configure_workers_and_start.py
@@ -1044,7 +1044,11 @@ def main(args: List[str], environ: MutableMapping[str, str]) -> None:
     # Start supervisord, which will start Synapse, all of the configured worker
     # processes, redis, nginx etc. according to the config we created above.
     log("Starting supervisord")
+
+    os.system("sed -i s/worker_connections 768;/worker_connections 16384;/ /etc/nginx/nginx.conf")
+
     flush_buffers()
+
     os.execle(
         "/usr/local/bin/supervisord",
         "supervisord",