diff --git a/Hitokori/Beatmaps/HitokoriBeatmapConverter.cs b/Hitokori/Beatmaps/HitokoriBeatmapConverter.cs
index a2fc9dc..cd14118 100644
--- a/Hitokori/Beatmaps/HitokoriBeatmapConverter.cs
+++ b/Hitokori/Beatmaps/HitokoriBeatmapConverter.cs
@@ -204,7 +204,7 @@ void PostProcess ( HitokoriBeatmap Beatmap ) {
 			foreach ( var tile in Beatmap.HitObjects ) {
 				tile.StylizeTiles();
 			}
-			tiles.First().FirstPoint.RefreshChain();
+			tiles.FirstOrDefault()?.FirstPoint.RefreshChain();
 		}
 
 		void GenerateBreaks ( HitokoriBeatmap Beatmap ) {
diff --git a/Hitokori/osu.Game.Rulesets.Hitokori.csproj b/Hitokori/osu.Game.Rulesets.Hitokori.csproj
index c0fd081..8ee42fc 100644
--- a/Hitokori/osu.Game.Rulesets.Hitokori.csproj
+++ b/Hitokori/osu.Game.Rulesets.Hitokori.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game" Version="2022.923.1" />
+    <PackageReference Include="ppy.osu.Game" Version="2022.927.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Tests/osu.Game.Rulesets.Hitokori.Tests.csproj b/Tests/osu.Game.Rulesets.Hitokori.Tests.csproj
index 9b2538b..cd703d7 100644
--- a/Tests/osu.Game.Rulesets.Hitokori.Tests.csproj
+++ b/Tests/osu.Game.Rulesets.Hitokori.Tests.csproj
@@ -10,9 +10,9 @@
     </PropertyGroup>
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0-preview-20220726-02" />
     <PackageReference Include="NUnit" Version="3.13.3" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.3.0-alpha-net7.4" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
   </ItemGroup>
 	<ItemGroup>