diff --git a/src/SqlClient/SqlClient.fsproj b/src/SqlClient/SqlClient.fsproj
index 3e18c9a0..2f2e90ab 100644
--- a/src/SqlClient/SqlClient.fsproj
+++ b/src/SqlClient/SqlClient.fsproj
@@ -26,6 +26,7 @@
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net40'">
     <Reference Include="System.Data" />
+    <Reference Include="System.Linq" />
     <Reference Include="System.Transactions" />
   </ItemGroup>
   <ItemGroup>