diff --git a/slo/src/Client.cs b/slo/src/Client.cs
index 810ca198..50f0a384 100644
--- a/slo/src/Client.cs
+++ b/slo/src/Client.cs
@@ -3,6 +3,7 @@
 using Microsoft.Extensions.Logging.Abstractions;
 using Ydb.Sdk;
 using Ydb.Sdk.Services.Table;
+using Ydb.Sdk.Services.Sessions;
 
 namespace slo;