diff --git a/Dockerfile.isar b/Dockerfile.isar
index 6b325f3..cde63b0 100644
--- a/Dockerfile.isar
+++ b/Dockerfile.isar
@@ -3,7 +3,9 @@
 FROM kasproject/kas:latest
 
 ENV LC_ALL=en_US.UTF-8
-RUN apt-get update && \
+RUN echo 'deb http://deb.debian.org/debian buster-backports main' > /etc/apt/sources.list.d/buster-backports.list && \
+    echo "Package: qemu-user-static\nPin: release n=buster-backports\nPin-Priority: 501\n\nPackage: *\nPin: release n=buster-backports\nPin-Priority: -1" > /etc/apt/preferences.d/qemu-user-static && \
+    apt-get update && \
     apt-get install -y -f --no-install-recommends \
             autoconf automake gdisk libtool bash-completion \
             sudo grub2 grub-efi-amd64-bin grub-efi-ia32-bin \
@@ -18,4 +20,4 @@ RUN echo "builder ALL=NOPASSWD: ALL" > /etc/sudoers.d/builder-nopasswd && \
 RUN echo "Defaults env_keep += \"ftp_proxy http_proxy https_proxy no_proxy\"" \
     > /etc/sudoers.d/env_keep && chmod 660 /etc/sudoers.d/env_keep
 
-RUN sed -i 's|#!/bin/bash|\0\n\ndpkg-reconfigure qemu-user-static 2>\&1 \| grep -v "already enabled in kernel"|' /kas/docker-entrypoint
+RUN sed -i 's|#!/bin/bash|\0\n\n/etc/init.d/binfmt-support start|' /kas/docker-entrypoint