diff --git a/starrail_damage_cal/excel/model.py b/starrail_damage_cal/excel/model.py
index 724f967..26ca1e4 100644
--- a/starrail_damage_cal/excel/model.py
+++ b/starrail_damage_cal/excel/model.py
@@ -56,7 +56,7 @@ class SingleRelicMainAffix(Struct):
     Property: str
     BaseValue: PromotionAttr
     LevelAdd: PromotionAttr
-    IsAvailable: bool
+    IsAvailable: Union[bool, None] = None
 
 
 class SingleRelicSubAffix(Struct):
diff --git a/starrail_damage_cal/version.py b/starrail_damage_cal/version.py
index aaebb2e..b632e7d 100644
--- a/starrail_damage_cal/version.py
+++ b/starrail_damage_cal/version.py
@@ -1 +1 @@
-StarRail_version = "3.0.0"
+StarRail_version = "3.0.1"