diff --git a/linux-flatpak/Dockerfile b/linux-flatpak/Dockerfile
index b42379f..f6115fa 100644
--- a/linux-flatpak/Dockerfile
+++ b/linux-flatpak/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 LABEL maintainer="citraemu"
 RUN apt-get update && apt-get -y full-upgrade
-RUN apt-get install -y p7zip-full wget git flatpak flatpak-builder ca-certificates sshfs curl fuse dnsutils gnupg2
+RUN apt-get install -y p7zip-full wget git flatpak flatpak-builder ca-certificates sshfs curl fuse dnsutils gnupg2 sudo
 RUN flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
 RUN flatpak install -y flathub org.kde.Platform//5.12 org.kde.Sdk//5.12