diff --git a/etc/systemd/system/aminda-duperemove.service b/etc/systemd/system/aminda-duperemove.service
index d1b5d0bd..bc00d10e 100644
--- a/etc/systemd/system/aminda-duperemove.service
+++ b/etc/systemd/system/aminda-duperemove.service
@@ -8,10 +8,10 @@ TimeoutStartSec=infinity
 # I have observed duperemove requesting blkid to be ran as root for
 # generating some cache, so sure.
 ExecStart=-blkid
-ExecStart=-duperemove -rdhq --hashfile=/root/home.hash /home
-ExecStart=-duperemove -rdhq --hashfile=/root/usr-local-bin.hash /usr/local/bin
-ExecStart=-duperemove -rdhq --hashfile=/root/flatpak.hash /var/lib/flatpak
-ExecStart=-duperemove -rdhq --hashfile=/root/snap.hash /var/lib/snapd
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/home.hash /home
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/usr-local-bin.hash /usr/local/bin
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/flatpak.hash /var/lib/flatpak
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/snap.hash /var/lib/snapd
 User=root
 StandardOutput=journal
 StandardError=journal
diff --git a/etc/systemd/system/aminda-duperemove.service.d/00-rootfs.conf b/etc/systemd/system/aminda-duperemove.service.d/00-rootfs.conf
index da8209f4..d740e5bb 100644
--- a/etc/systemd/system/aminda-duperemove.service.d/00-rootfs.conf
+++ b/etc/systemd/system/aminda-duperemove.service.d/00-rootfs.conf
@@ -1,4 +1,4 @@
 [Service]
 # This drop-in will make the service deduplicate everything.
 ExecStart=
-ExecStart=-duperemove -rdhq --hashfile=/root/rootfs.hash /
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/rootfs.hash /
diff --git a/etc/systemd/system/aminda-duperemove.service.d/91-fedora-atomic.conf b/etc/systemd/system/aminda-duperemove.service.d/91-fedora-atomic.conf
index 9ce54564..9ca3e88d 100644
--- a/etc/systemd/system/aminda-duperemove.service.d/91-fedora-atomic.conf
+++ b/etc/systemd/system/aminda-duperemove.service.d/91-fedora-atomic.conf
@@ -2,7 +2,7 @@
 ExecStart=
 # /home is actually in /var/home so the latter command should catch it
 #ExecStart=-duperemove -rdhq --hashfile=/root/home.hash /home
-ExecStart=-duperemove -rdhq --hashfile=/root/var.hash /var
+ExecStart=-duperemove -rdhq --io-threads=1 --cpu-threads=1 --hashfile=/root/var.hash /var
 ExecStartPre=
 # Same filesystem although different subvolume, so this should work?
 ExecStartPre=-btrfs balance start -dusage=25 -dlimit=10 -musage=25 -mlimit=10 /var