diff --git a/src/BizHawk.Client.Common/BizHawk.Client.Common.csproj b/src/BizHawk.Client.Common/BizHawk.Client.Common.csproj
index c88cbc7f81f..f3db45b2a27 100644
--- a/src/BizHawk.Client.Common/BizHawk.Client.Common.csproj
+++ b/src/BizHawk.Client.Common/BizHawk.Client.Common.csproj
@@ -10,7 +10,7 @@
 	<ItemGroup>
 		<Reference Include="NLua, Version=1.3.2.0, Culture=neutral, processorArchitecture=MSIL" SpecificVersion="false" HintPath="$(ProjectDir)../../Assets/dll/nlua/NLua.dll" Private="false" /><!-- don't copy, will be copied with Assets -->
 		<Reference Include="System.Data.SQLite, Version=1.0.105.2, Culture=neutral, PublicKeyToken=db937bc2d44ff139, processorArchitecture=AMD64" SpecificVersion="False" HintPath="$(ProjectDir)../../References/x64/SQLite/System.Data.SQLite.dll" Private="true" />
-		<PackageReference Include="SharpCompress" Version="0.29.0" />
+		<PackageReference Include="SharpCompress" Version="0.26.0" /><!-- can't upgrade as newer versions transitively depend on incompatible version of System.Runtime.CompilerServices.Unsafe -->
 		<ProjectReference Include="$(ProjectDir)../BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj" />
 		<ProjectReference Include="$(ProjectDir)../BizHawk.Bizware.BizwareGL/BizHawk.Bizware.BizwareGL.csproj" />
 		<EmbeddedResource Include="Resources/**/*" />