diff --git a/Aaru.CommonTypes.csproj b/Aaru.CommonTypes.csproj
index b032e72..e8cdb05 100644
--- a/Aaru.CommonTypes.csproj
+++ b/Aaru.CommonTypes.csproj
@@ -18,6 +18,7 @@
     <Title>Aaru.CommonTypes</Title>
     <ApplicationVersion>$(Version)</ApplicationVersion>
     <TargetFramework>netcoreapp3.1</TargetFramework>
+    <LangVersion>8</LangVersion>
   </PropertyGroup>
   <PropertyGroup>
     <NrtRevisionFormat>$(Version)+{chash:8} built by {mname} in $(Configuration){!:, modified}</NrtRevisionFormat>