diff --git a/proxmox/perf/bench/lxc-bench-setup.sh b/proxmox/perf/bench/lxc-bench-setup.sh
index 38683eb..043b0d6 100644
--- a/proxmox/perf/bench/lxc-bench-setup.sh
+++ b/proxmox/perf/bench/lxc-bench-setup.sh
@@ -52,7 +52,8 @@ pct start "$CTID"
 sleep 5
 
 # toolset in (same installer the guests use; piped in, nothing fetched from outside)
-pct exec "$CTID" -- bash -c "export DEBIAN_FRONTEND=noninteractive; apt-get update -qq >/dev/null; apt-get install -y -qq fio iperf3 jq libaio1 >/dev/null"
+# libaio1 is gone on trixie (t64 transition); fio pulls the right one itself
+pct exec "$CTID" -- bash -c "export DEBIAN_FRONTEND=noninteractive; apt-get update -qq >/dev/null; apt-get install -y -qq fio iperf3 jq libaio1 >/dev/null || apt-get install -y -qq fio iperf3 jq >/dev/null"
 
 BDIR="/mnt/bench"
 [ -z "$STORE" ] && BDIR="/var/tmp"