diff --git a/backend/src/routes/health.js b/backend/src/routes/health.js
index bc4ed02..b8ef2c5 100644
--- a/backend/src/routes/health.js
+++ b/backend/src/routes/health.js
@@ -69,7 +69,7 @@ async function checkZvolAccess() {
 
 async function checkResticRepository() {
   try {
-    const result = await runRestic(['snapshots', '--json'], { ignoreExitCode: true });
+    const result = await runRestic(['--no-lock', 'snapshots', '--json'], { ignoreExitCode: true });
     return checkValue(result.exitCode === 0, result.exitCode === 0 ? 'ok' : result.stderr.trim() || 'restic repository check failed');
   } catch (error) {
     return checkValue(false, error.message);
diff --git a/backend/src/routes/snapshots.js b/backend/src/routes/snapshots.js
index 2fb8934..279961c 100644
--- a/backend/src/routes/snapshots.js
+++ b/backend/src/routes/snapshots.js
@@ -16,7 +16,7 @@ snapshotsRouter.get('/:vmName/:snapshotId/files', async (req, res, next) => {
   try {
     const snapshot = await validateSnapshotForVm(req.params.vmName, req.params.snapshotId);
     assertSnapshotIdShape(snapshot.id);
-    const result = await runRestic(['ls', '--json', snapshot.id]);
+    const result = await runRestic(['--no-lock', 'ls', '--json', snapshot.id]);
     const entries = result.stdout
       .split('\n')
       .filter(Boolean)
diff --git a/backend/src/validators.js b/backend/src/validators.js
index dfa3bfb..4bb5257 100644
--- a/backend/src/validators.js
+++ b/backend/src/validators.js
@@ -40,7 +40,7 @@ export async function validateVmExists(vmName) {
 
 export async function listSnapshotsForVm(vmName) {
   await validateVmExists(vmName);
-  const result = await runRestic(['snapshots', '--json', '--tag', vmName]);
+  const result = await runRestic(['--no-lock', 'snapshots', '--json', '--tag', vmName]);
   const snapshots = JSON.parse(result.stdout || '[]');
   return snapshots.sort((a, b) => String(b.time || '').localeCompare(String(a.time || '')));
 }