diff --git a/Dapper.Contrib.Tests/Dapper.Contrib.Tests.csproj b/Dapper.Contrib.Tests/Dapper.Contrib.Tests.csproj
index b2d57ee622da427b6c1ecf5c0f10ebb4c5ebb67f..3be42f0bcd24c9ccb14573e83802732b93d197cc 100644
--- a/Dapper.Contrib.Tests/Dapper.Contrib.Tests.csproj
+++ b/Dapper.Contrib.Tests/Dapper.Contrib.Tests.csproj
@@ -43,7 +43,6 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
-    <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Core" />
     <Reference Include="System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
diff --git a/Dapper.Contrib.Tests/Tests.cs b/Dapper.Contrib.Tests/Tests.cs
index 1c4f68474f2022461088a068121fe3d2cd31db1d..653569afabe5c81887931d8db9a85aa10eb6c923 100644
--- a/Dapper.Contrib.Tests/Tests.cs
+++ b/Dapper.Contrib.Tests/Tests.cs
@@ -1,5 +1,4 @@
-using System.ComponentModel.DataAnnotations;
-using System.Data;
+using System.Data;
 using System.Data.SqlServerCe;
 using System.IO;
 using System.Linq;
diff --git a/Dapper.Contrib/Dapper.Contrib.csproj b/Dapper.Contrib/Dapper.Contrib.csproj
index f57115bdc711d8d680d0928aadf2e80f00dd2ec1..2edce6abb10d7e53d2189d1343f1dc8c62218ce6 100644
--- a/Dapper.Contrib/Dapper.Contrib.csproj
+++ b/Dapper.Contrib/Dapper.Contrib.csproj
@@ -40,7 +40,6 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
-    <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
@@ -49,7 +48,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Extensions\SqlMapperExtensions.cs" />
+    <Compile Include="SqlMapperExtensions.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
@@ -58,6 +57,9 @@
       <Name>Dapper</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="Dapper.Contrib.nuspec" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/Dapper.Contrib/Dapper.Contrib.nuspec b/Dapper.Contrib/Dapper.Contrib.nuspec
index 4b2bf3be78b3d5de609abdf607188e8187b5ee26..793baea38ac5647eb74df2afadddc2452f9a1772 100644
--- a/Dapper.Contrib/Dapper.Contrib.nuspec
+++ b/Dapper.Contrib/Dapper.Contrib.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
   <metadata>
     <id>Dapper.Contrib</id>
-    <version>1.0</version>
+    <version>1.1</version>
     <authors>Sam Saffron,Johan Danforth</authors>
     <owners>Sam Saffron,Johan Danforth</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0</licenseUrl>
diff --git a/Dapper.Contrib/SqlMapperExtensions.cs b/Dapper.Contrib/SqlMapperExtensions.cs
index 6705c39f45b1a9f107df86dd7cde62f91ae1c0eb..74a4928714aadf8e9794906e42d37dfcdfeb9f4d 100644
--- a/Dapper.Contrib/SqlMapperExtensions.cs
+++ b/Dapper.Contrib/SqlMapperExtensions.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
 using System.Data;
 using System.Diagnostics;
 using System.Linq;
@@ -434,4 +433,10 @@ public TableAttribute(string tableName)
         }
         public string Name { get; private set; }
     }
+
+    // do not want to depend on data annotations that is not in client profile
+    [AttributeUsage(AttributeTargets.Property)]
+    public class KeyAttribute : Attribute
+    {
+    }
 }