diff --git a/build/common.props b/build/common.props
index 813c202b7f..17a0ccb4d8 100644
--- a/build/common.props
+++ b/build/common.props
@@ -1,5 +1,6 @@
-<Project ToolsVersion="15.0">
+<Project>
 
+  <Import Project="dependencies.props" />
   <Import Project="..\version.props" />
 
   <PropertyGroup>
@@ -9,8 +10,6 @@
     <AssemblyOriginatorKeyFile>$(MSBuildThisFileDirectory)Key.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <PublicSign Condition="'$(OS)' != 'Windows_NT'">true</PublicSign>
-    <NetCoreAppImplicitPackageVersion>1.2.0-*</NetCoreAppImplicitPackageVersion>
-    <NetStandardImplicitPackageVersion>1.6.2-*</NetStandardImplicitPackageVersion>
     <VersionSuffix Condition="'$(VersionSuffix)'!='' AND '$(BuildNumber)' != ''">$(VersionSuffix)-$(BuildNumber)</VersionSuffix>
   </PropertyGroup>
 
@@ -22,4 +21,4 @@
     <PackageReference Include="NETStandard.Library" Version="$(NetStandardImplicitPackageVersion)" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/build/dependencies.props b/build/dependencies.props
new file mode 100644
index 0000000000..e704edaec0
--- /dev/null
+++ b/build/dependencies.props
@@ -0,0 +1,6 @@
+<Project>
+  <PropertyGroup>
+    <NetStandardImplicitPackageVersion>1.6.1</NetStandardImplicitPackageVersion>
+    <CoreFxVersion>4.3.0</CoreFxVersion>
+  </PropertyGroup>
+</Project>
diff --git a/src/Microsoft.AspNetCore.JsonPatch/Microsoft.AspNetCore.JsonPatch.csproj b/src/Microsoft.AspNetCore.JsonPatch/Microsoft.AspNetCore.JsonPatch.csproj
index 5bf2f0f74e..d3d5b01a89 100644
--- a/src/Microsoft.AspNetCore.JsonPatch/Microsoft.AspNetCore.JsonPatch.csproj
+++ b/src/Microsoft.AspNetCore.JsonPatch/Microsoft.AspNetCore.JsonPatch.csproj
@@ -13,10 +13,10 @@
     <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
     <PackageReference Include="Microsoft.Extensions.ClosedGenericMatcher.Sources" Version="1.2.0-*" PrivateAssets="All" />
   </ItemGroup>
-  
+
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-    <PackageReference Include="Microsoft.CSharp" Version="4.4.0-*" />
-    <PackageReference Include="System.Reflection.TypeExtensions" Version="4.4.0-*" />
+    <PackageReference Include="Microsoft.CSharp" Version="$(CoreFxVersion)" />
+    <PackageReference Include="System.Reflection.TypeExtensions" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/test/Microsoft.AspNetCore.JsonPatch.Test/Microsoft.AspNetCore.JsonPatch.Test.csproj b/test/Microsoft.AspNetCore.JsonPatch.Test/Microsoft.AspNetCore.JsonPatch.Test.csproj
index 0825a33ba9..e939e5d62c 100644
--- a/test/Microsoft.AspNetCore.JsonPatch.Test/Microsoft.AspNetCore.JsonPatch.Test.csproj
+++ b/test/Microsoft.AspNetCore.JsonPatch.Test/Microsoft.AspNetCore.JsonPatch.Test.csproj
@@ -12,15 +12,11 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0-*" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.4.0-*" />
-  </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'net452' ">
     <Reference Include="System.Linq.Expressions" />
-    <Reference Include="System" />
     <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>