diff --git a/components/engine/contrib/completion/bash/docker b/components/engine/contrib/completion/bash/docker
index 48a51c6b0d..97d62ef959 100644
--- a/components/engine/contrib/completion/bash/docker
+++ b/components/engine/contrib/completion/bash/docker
@@ -1668,6 +1668,7 @@ _docker_run() {
 		--tmpfs
 		--ulimit
 		--user -u
+		--userns
 		--uts
 		--volume-driver
 		--volumes-from
@@ -1827,6 +1828,10 @@ _docker_run() {
 			__docker_complete_user_group
 			return
 			;;
+		--userns)
+			COMPREPLY=( $( compgen -W "host" -- "$cur" ) )
+			return
+			;;
 		--volume-driver)
 			__docker_complete_plugins Volume
 			return