diff --git a/src/ErikEJ.SqlCe.csproj b/src/ErikEJ.SqlCe.csproj
index 9748bb0..882626a 100644
--- a/src/ErikEJ.SqlCe.csproj
+++ b/src/ErikEJ.SqlCe.csproj
@@ -32,6 +32,7 @@
     <WarningLevel>4</WarningLevel>
     <RunCodeAnalysis>true</RunCodeAnalysis>
     <DocumentationFile>bin\Debug\ErikEJ.SqlCe.XML</DocumentationFile>
+    <LangVersion>3</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
diff --git a/src/ErikEJ.SqlCe40.csproj b/src/ErikEJ.SqlCe40.csproj
index 8739b80..3d1212c 100644
--- a/src/ErikEJ.SqlCe40.csproj
+++ b/src/ErikEJ.SqlCe40.csproj
@@ -32,6 +32,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>3</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
diff --git a/src/Salient.Data/Salient.Data.csproj b/src/Salient.Data/Salient.Data.csproj
index f2c5679..b3857d5 100644
--- a/src/Salient.Data/Salient.Data.csproj
+++ b/src/Salient.Data/Salient.Data.csproj
@@ -48,6 +48,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <LangVersion>3</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>