diff --git a/buildroot-external/rootfs-overlay/etc/systemd/system/docker.service.d/hassos.conf b/buildroot-external/rootfs-overlay/etc/systemd/system/docker.service.d/hassos.conf
index c00cdf978..cd3fa0599 100644
--- a/buildroot-external/rootfs-overlay/etc/systemd/system/docker.service.d/hassos.conf
+++ b/buildroot-external/rootfs-overlay/etc/systemd/system/docker.service.d/hassos.conf
@@ -4,3 +4,4 @@ RequiresMountsFor=/etc/docker /mnt/data /var/lib/docker
 [Service]
 ExecStart=
 ExecStart=/usr/bin/dockerd -H fd:// --storage-driver=overlay2 --log-driver=journald --log-opt tag="{{.ImageName}}/{{.Name}}" --data-root /mnt/data/docker
+OOMScoreAdjust=-400
diff --git a/buildroot-external/rootfs-overlay/usr/sbin/hassos-supervisor b/buildroot-external/rootfs-overlay/usr/sbin/hassos-supervisor
index e4c3f941c..d180ae6d8 100755
--- a/buildroot-external/rootfs-overlay/usr/sbin/hassos-supervisor
+++ b/buildroot-external/rootfs-overlay/usr/sbin/hassos-supervisor
@@ -80,6 +80,7 @@ if [ -z "${SUPERVISOR_CONTAINER_ID}" ]; then
     docker container create \
         --name hassio_supervisor \
         --privileged --security-opt apparmor="hassio-supervisor" \
+        --oom-score-adj=-300 \
         -v /run/docker.sock:/run/docker.sock:rw \
         -v /run/systemd-journal-gatewayd.sock:/run/systemd-journal-gatewayd.sock:rw \
         -v /run/dbus:/run/dbus:ro \