diff --git a/go.mod b/go.mod
index 08f008ee3..499345a25 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/mgdelacroix/mmctl
 go 1.12
 
 require (
-	github.com/mattermost/mattermost-server v0.0.0-20190416171630-13fba10eb824
+	github.com/mattermost/mattermost-server v0.0.0-20190417144445-84a59ddb3928
 	github.com/pkg/errors v0.8.1
 	github.com/spf13/cobra v0.0.3
 	golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c
diff --git a/go.sum b/go.sum
index 0a0eb7b2b..5a55b4c1f 100644
--- a/go.sum
+++ b/go.sum
@@ -155,12 +155,15 @@ github.com/marstr/guid v0.0.0-20170427235115-8bdf7d1a087c/go.mod h1:74gB1z2wpxxI
 github.com/mattermost/gorp v2.0.1-0.20190301154413-3b31e9a39d05+incompatible/go.mod h1:0kX1qa3DOpaPJyOdMLeo7TcBN0QmUszj9a/VygOhDe0=
 github.com/mattermost/mattermost-server v0.0.0-20190416171630-13fba10eb824 h1:sQphcyZMnTJM/bVD5NQgjx0clel8MVL3kiGq9XmyklE=
 github.com/mattermost/mattermost-server v0.0.0-20190416171630-13fba10eb824/go.mod h1:/ZSPDRN6dUv1vWWTl8Vi05VwOIxPfGqIcDo01ytBiIQ=
+github.com/mattermost/mattermost-server v0.0.0-20190417144445-84a59ddb3928 h1:OoQ4ONxc0V1dsZ+zW4+bMC5/6O+l8B1sjUEKPdaOXQI=
+github.com/mattermost/mattermost-server v0.0.0-20190417144445-84a59ddb3928/go.mod h1:/ZSPDRN6dUv1vWWTl8Vi05VwOIxPfGqIcDo01ytBiIQ=
 github.com/mattermost/mattermost-server v5.3.1+incompatible h1:R/ld+VjFz7u7SgAFiJbvh2HFUaMaJtyCM/jXDe/wXTI=
 github.com/mattermost/mattermost-server v5.3.1+incompatible/go.mod h1:5L6MjAec+XXQwMIt791Ganu45GKsSiM+I0tLR9wUj8Y=
 github.com/mattermost/mattermost-server v5.9.0+incompatible h1:bUlZKAhjp7cGQRepmmsv225vbXyZaXOuVstqgpB+cE4=
 github.com/mattermost/mattermost-server v5.9.0+incompatible/go.mod h1:5L6MjAec+XXQwMIt791Ganu45GKsSiM+I0tLR9wUj8Y=
 github.com/mattermost/mattermost-server v5.10.0-rc6+incompatible h1:ylEbLN0V8VyuVjY0a2N9JDkevF7qYYOLdoBzvuo89sU=
 github.com/mattermost/mattermost-server v5.10.0-rc6+incompatible/go.mod h1:5L6MjAec+XXQwMIt791Ganu45GKsSiM+I0tLR9wUj8Y=
+github.com/mattermost/mattermost-server v5.10.0+incompatible h1:egegOxu77bvu1N5VVUwLylJAqWqs6nriFPM2QrdSbLs=
 github.com/mattermost/rsc v0.0.0-20160330161541-bbaefb05eaa0/go.mod h1:nV5bfVpT//+B1RPD2JvRnxbkLmJEYXmRaaVl15fsXjs=
 github.com/mattermost/viper v1.0.4/go.mod h1:uc5hKG9lv4/KRwPOt2c1omOyirS/UnuA2TytiZQSFHM=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
diff --git a/vendor/github.com/mattermost/mattermost-server/model/user.go b/vendor/github.com/mattermost/mattermost-server/model/user.go
index d8948eadb..7c1cd146e 100644
--- a/vendor/github.com/mattermost/mattermost-server/model/user.go
+++ b/vendor/github.com/mattermost/mattermost-server/model/user.go
@@ -9,6 +9,7 @@ import (
 	"io"
 	"net/http"
 	"regexp"
+	"sort"
 	"strings"
 	"unicode/utf8"
 
@@ -117,6 +118,53 @@ type UserForIndexing struct {
 	ChannelsIds []string `json:"channel_id"`
 }
 
+type UserSlice []*User
+
+func (u UserSlice) Usernames() []string {
+	usernames := []string{}
+	for _, user := range u {
+		usernames = append(usernames, user.Username)
+	}
+	sort.Strings(usernames)
+	return usernames
+}
+
+func (u UserSlice) IDs() []string {
+	ids := []string{}
+	for _, user := range u {
+		ids = append(ids, user.Id)
+	}
+	return ids
+}
+
+func (u UserSlice) FilterByID(ids []string) UserSlice {
+	var matches []*User
+	for _, user := range u {
+		for _, id := range ids {
+			if id == user.Id {
+				matches = append(matches, user)
+			}
+		}
+	}
+	return UserSlice(matches)
+}
+
+func (u UserSlice) FilterWithoutID(ids []string) UserSlice {
+	var keep []*User
+	for _, user := range u {
+		present := false
+		for _, id := range ids {
+			if id == user.Id {
+				present = true
+			}
+		}
+		if !present {
+			keep = append(keep, user)
+		}
+	}
+	return UserSlice(keep)
+}
+
 func (u *User) DeepCopy() *User {
 	copyUser := *u
 	if u.AuthData != nil {
diff --git a/vendor/modules.txt b/vendor/modules.txt
index e739dcbd8..19e1050eb 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -12,7 +12,7 @@ github.com/gorilla/websocket
 github.com/inconshreveable/mousetrap
 # github.com/konsorten/go-windows-terminal-sequences v1.0.2
 github.com/konsorten/go-windows-terminal-sequences
-# github.com/mattermost/mattermost-server v0.0.0-20190416171630-13fba10eb824
+# github.com/mattermost/mattermost-server v0.0.0-20190417144445-84a59ddb3928
 github.com/mattermost/mattermost-server/mlog/human
 github.com/mattermost/mattermost-server/model
 github.com/mattermost/mattermost-server/mlog