diff --git a/mirror.sh b/mirror.sh
index 0274a39..3f5aa64 100755
--- a/mirror.sh
+++ b/mirror.sh
@@ -170,7 +170,7 @@ function push_multiarch_image() {
 
 function start_docker_daemon() {
 	# Starting Docker daemon.
-	/usr/local/bin/dockerd --data-root=/var/lib/docker &
+	/usr/local/bin/dockerd --data-root=/var/lib/docker --max-concurrent-uploads 1 &
 
 	# Wait for it.
 	echo "Waiting for Docker daemon to start..."