diff --git a/Dockerfile.isar b/Dockerfile.isar
index 94dd0af..62a5f00 100644
--- a/Dockerfile.isar
+++ b/Dockerfile.isar
@@ -8,7 +8,6 @@ ARG DEBIAN_FRONTEND=noninteractive
 
 ENV LC_ALL=en_US.UTF-8
 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 && \
     echo 'deb http://deb.debian.org/debian bullseye main' > /etc/apt/sources.list.d/bullseye.list && \
     echo "Package: skopeo golang-github-containers-common golang-github-containers-image\nPin: release n=bullseye\nPin-Priority: 501\n\nPackage: *\nPin: release n=bullseye\nPin-Priority: -1" > /etc/apt/preferences.d/skopeo && \
     apt-get update && \
@@ -16,7 +15,7 @@ RUN echo 'deb http://deb.debian.org/debian buster-backports main' > /etc/apt/sou
             autoconf automake gdisk libtool bash-completion \
             reprepro python3 binfmt-support e2fsprogs \
             umoci skopeo \
-            multistrap qemu-user-static debootstrap quilt && \
+            multistrap qemu-user-static/buster-backports debootstrap quilt && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*