diff --git a/src/Jhoose.Security.Core/Jhoose.Security.Core.csproj b/src/Jhoose.Security.Core/Jhoose.Security.Core.csproj
index 9111082..c9d3067 100644
--- a/src/Jhoose.Security.Core/Jhoose.Security.Core.csproj
+++ b/src/Jhoose.Security.Core/Jhoose.Security.Core.csproj
@@ -46,7 +46,7 @@
 		<ReleaseVersion>2.3.0.0</ReleaseVersion>
 	</PropertyGroup>
 	<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-		<LangVersion>latest</LangVersion>
+	 <LangVersion>12</LangVersion>
 	</PropertyGroup>
 	<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
 		<LangVersion>latest</LangVersion>
diff --git a/src/Jhoose.Security/Jhoose.Security.csproj b/src/Jhoose.Security/Jhoose.Security.csproj
index 6c59fe9..8b7e0af 100644
--- a/src/Jhoose.Security/Jhoose.Security.csproj
+++ b/src/Jhoose.Security/Jhoose.Security.csproj
@@ -4,6 +4,7 @@
 		<TargetFrameworks>net6.0;net7.0;net8.0</TargetFrameworks>
 		<AddRazorSupportForMvc>true</AddRazorSupportForMvc>
 		<Nullable>enable</Nullable>
+		 <LangVersion>12</LangVersion>
 		<PackageId>Jhoose.Security.Admin</PackageId>
 		<RepositoryUrl>https://github.com/andrewmarkham/contentsecuritypolicy</RepositoryUrl>
 		<ProjectUrl>https://github.com/andrewmarkham/contentsecuritypolicy</ProjectUrl>