diff --git a/hostd/src/machine.rs b/hostd/src/machine.rs
index 4f00a41..b249576 100644
--- a/hostd/src/machine.rs
+++ b/hostd/src/machine.rs
@@ -1,7 +1,7 @@
 use dropshot::{endpoint, HttpError, HttpResponseOk, RequestContext};
 use schemars::JsonSchema;
 use serde::Serialize;
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 use trace_request::trace_request;
 
 use systemd_ipc::addrs::SYSTEMD_HOSTNAME;