diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f3461484a03178df176fef7908ec03d43f05dd97..535b7393729343f72fe7d4e0d4fe63eaf1e299fb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,5 +12,7 @@ build:
     - test -d /srv/chroot/unstable-sbuild || sbuild-createchroot --debootstrap=mmdebstrap --alias=sid unstable /srv/chroot/unstable-sbuild http://deb.debian.org/debian
     - id build >/dev/null || adduser --gecos build --disabled-password build
     - id build >/dev/null || adduser build sbuild
+    - sed -i '/union-overlay-directory=/d' /etc/schroot/chroot.d/sid-arm64-sbuild-*
+    - echo union-overlay-directory=$(pwd) >> /etc/schroot/chroot.d/sid-arm64-sbuild-*
     - chown build -R .
     - runuser build -c ./build.sh 2>&1 | ./filter-output