diff --git a/contrib/completion/bash/docker b/contrib/completion/bash/docker
index 49868abbaf..c911b02390 100644
--- a/contrib/completion/bash/docker
+++ b/contrib/completion/bash/docker
@@ -2548,6 +2548,7 @@ _docker_daemon() {
 		--ip-forward=false
 		--ip-masq=false
 		--iptables=false
+		--ip6tables
 		--ipv6
 		--live-restore
 		--no-new-privileges