diff --git a/Lib9c b/Lib9c
index 538afeade..2cd67a880 160000
--- a/Lib9c
+++ b/Lib9c
@@ -1 +1 @@
-Subproject commit 538afeade5d409a97d709d58b7a521b3e1d76943
+Subproject commit 2cd67a880d316eee55a59390a6c783683f55c2ca
diff --git a/NineChronicles.Headless/GraphTypes/States/CombinationSlotStateType.cs b/NineChronicles.Headless/GraphTypes/States/CombinationSlotStateType.cs
index b6742f078..dbc19948c 100644
--- a/NineChronicles.Headless/GraphTypes/States/CombinationSlotStateType.cs
+++ b/NineChronicles.Headless/GraphTypes/States/CombinationSlotStateType.cs
@@ -16,10 +16,13 @@ public CombinationSlotStateType()
                 nameof(CombinationSlotState.UnlockBlockIndex),
                 description: "Block index at the combination slot can be usable.",
                 resolve: context => context.Source.UnlockBlockIndex);
+#pragma warning disable CS0618
             Field<NonNullGraphType<IntGraphType>>(
-                nameof(CombinationSlotState.UnlockStage),
+                nameof(
+                    CombinationSlotState.UnlockStage),
                 description: "Stage id at the combination slot unlock.",
                 resolve: context => context.Source.UnlockStage);
+#pragma warning restore CS0618
             Field<NonNullGraphType<LongGraphType>>(
                 nameof(CombinationSlotState.StartBlockIndex),
                 description: "Block index at the combination started.",