diff --git a/build/common.props b/build/common.props
index 1ac765206a..8547fdb22a 100644
--- a/build/common.props
+++ b/build/common.props
@@ -1,4 +1,5 @@
 <Project>
+  <Import Project="dependencies.props" />
   <Import Project="..\version.props" />
 
   <PropertyGroup>
@@ -8,8 +9,6 @@
     <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>
 
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.Identity.EntityFrameworkCore/Microsoft.AspNetCore.Identity.EntityFrameworkCore.csproj b/src/Microsoft.AspNetCore.Identity.EntityFrameworkCore/Microsoft.AspNetCore.Identity.EntityFrameworkCore.csproj
index f05e46e94c..29621db960 100644
--- a/src/Microsoft.AspNetCore.Identity.EntityFrameworkCore/Microsoft.AspNetCore.Identity.EntityFrameworkCore.csproj
+++ b/src/Microsoft.AspNetCore.Identity.EntityFrameworkCore/Microsoft.AspNetCore.Identity.EntityFrameworkCore.csproj
@@ -14,6 +14,6 @@
     <PackageReference Include="Microsoft.Extensions.TaskCache.Sources" Version="1.2.0-*" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-    <PackageReference Include="System.ComponentModel.TypeConverter" Version="4.4.0-*" />
+    <PackageReference Include="System.ComponentModel.TypeConverter" Version="$(CoreFxVersion)" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Microsoft.AspNetCore.Identity.Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj b/src/Microsoft.AspNetCore.Identity.Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
index 1488a9a678..8935aae4ac 100644
--- a/src/Microsoft.AspNetCore.Identity.Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
+++ b/src/Microsoft.AspNetCore.Identity.Specification.Tests/Microsoft.AspNetCore.Identity.Specification.Tests.csproj
@@ -17,6 +17,6 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
   </ItemGroup>
   <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.3' ">
-    <PackageReference Include="System.Linq.Queryable" Version="4.4.0-*" />
+    <PackageReference Include="System.Linq.Queryable" Version="$(CoreFxVersion)" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test.csproj b/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test.csproj
index 5d0823b7a2..27e24fe2b7 100644
--- a/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test.csproj
+++ b/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.InMemory.Test.csproj
@@ -21,7 +21,4 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0-*" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.4.0-*" />
-  </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test.csproj b/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test.csproj
index 6f6c48cdab..c009b2b484 100644
--- a/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test.csproj
+++ b/test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test/Microsoft.AspNetCore.Identity.EntityFrameworkCore.Test.csproj
@@ -27,7 +27,4 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0-*" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.4.0-*" />
-  </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/Microsoft.AspNetCore.Identity.InMemory.Test/Microsoft.AspNetCore.Identity.InMemory.Test.csproj b/test/Microsoft.AspNetCore.Identity.InMemory.Test/Microsoft.AspNetCore.Identity.InMemory.Test.csproj
index 3fc712a6f0..f4e19601b6 100644
--- a/test/Microsoft.AspNetCore.Identity.InMemory.Test/Microsoft.AspNetCore.Identity.InMemory.Test.csproj
+++ b/test/Microsoft.AspNetCore.Identity.InMemory.Test/Microsoft.AspNetCore.Identity.InMemory.Test.csproj
@@ -22,7 +22,4 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0-*" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.4.0-*" />
-  </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/Microsoft.AspNetCore.Identity.Test/Microsoft.AspNetCore.Identity.Test.csproj b/test/Microsoft.AspNetCore.Identity.Test/Microsoft.AspNetCore.Identity.Test.csproj
index a71a07823c..1e115b68a2 100644
--- a/test/Microsoft.AspNetCore.Identity.Test/Microsoft.AspNetCore.Identity.Test.csproj
+++ b/test/Microsoft.AspNetCore.Identity.Test/Microsoft.AspNetCore.Identity.Test.csproj
@@ -21,7 +21,4 @@
     <PackageReference Include="xunit" Version="2.2.0-*" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0-*" />
   </ItemGroup>
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp1.1' ">
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.4.0-*" />
-  </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>