diff --git a/build/common.props b/build/common.props
index c39a1694c3..de08271afe 100644
--- a/build/common.props
+++ b/build/common.props
@@ -1,4 +1,5 @@
 <Project>
+  <Import Project="dependencies.props" />
   <Import Project="..\version.props" />
 
   <PropertyGroup>
@@ -7,8 +8,6 @@
     <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.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj b/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
index 3baa9641ae..85948d6df7 100755
--- a/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
+++ b/src/Microsoft.AspNetCore.Html.Abstractions/Microsoft.AspNetCore.Html.Abstractions.csproj
@@ -15,7 +15,7 @@ Microsoft.AspNetCore.Html.IHtmlContent</Description>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Text.Encodings.Web" Version="4.4.0-*" />
+    <PackageReference Include="System.Text.Encodings.Web" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj b/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
index 231359c110..70766d649f 100755
--- a/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
+++ b/src/Microsoft.Extensions.WebEncoders/Microsoft.Extensions.WebEncoders.csproj
@@ -15,7 +15,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="1.2.0-*" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="1.2.0-*" />
-    <PackageReference Include="System.Text.Encodings.Web" Version="4.4.0-*" />
+    <PackageReference Include="System.Text.Encodings.Web" Version="$(CoreFxVersion)" />
   </ItemGroup>
 
 </Project>