diff --git a/Directory.Packages.props b/Directory.Packages.props
new file mode 100644
index 00000000..ffcca278
--- /dev/null
+++ b/Directory.Packages.props
@@ -0,0 +1,25 @@
+<Project>
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageVersion Include="coverlet.collector" Version="6.0.0" />
+    <PackageVersion Include="CSharpier.MsBuild" Version="1.2.1" />
+    <PackageVersion Include="FluentAssertions" Version="6.12.0" />
+    <PackageVersion Include="GitHubActionsTestLogger" Version="2.3.3" />
+    <PackageVersion Include="Microsoft.Bcl.Async" Version="1.0.168" />
+    <PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Bcl.Memory" Version="9.0.1" />
+    <PackageVersion Include="Microsoft.Bcl.TimeProvider" Version="8.0.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageVersion Include="Microsoft.Net.Http" Version="2.2.29" />
+    <PackageVersion Include="System.Management" Version="8.0.0" />
+    <PackageVersion Include="System.Memory" Version="4.5.5" />
+    <PackageVersion Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+    <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
+    <PackageVersion Include="Xunit.SkippableFact" Version="1.4.13" />
+    <PackageVersion Include="xunit" Version="2.6.4" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.6" />
+  </ItemGroup>
+</Project>
diff --git a/PolyShim.Tests/PolyShim.Tests.csproj b/PolyShim.Tests/PolyShim.Tests.csproj
index 46aab71e..81ec1ca9 100644
--- a/PolyShim.Tests/PolyShim.Tests.csproj
+++ b/PolyShim.Tests/PolyShim.Tests.csproj
@@ -38,16 +38,16 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="6.0.0" PrivateAssets="all" />
-    <PackageReference Include="CSharpier.MsBuild" Version="1.2.1" PrivateAssets="all" />
-    <PackageReference Include="FluentAssertions" Version="6.12.0" />
-    <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
-    <PackageReference Include="xunit" Version="2.6.4" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6" PrivateAssets="all" />
-    <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
+    <PackageReference Include="coverlet.collector" PrivateAssets="all" />
+    <PackageReference Include="CSharpier.MsBuild" PrivateAssets="all" />
+    <PackageReference Include="FluentAssertions" />
+    <PackageReference Include="GitHubActionsTestLogger" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" />
+    <PackageReference Include="xunit" />
+    <PackageReference Include="xunit.runner.visualstudio" PrivateAssets="all" />
+    <PackageReference Include="Xunit.SkippableFact" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
diff --git a/PolyShim.sln b/PolyShim.sln
index cd2c1cd7..64a10042 100644
--- a/PolyShim.sln
+++ b/PolyShim.sln
@@ -5,6 +5,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Misc", "Misc", "{2E401512-C98F-487D-8F62-02973D1B4918}"
 	ProjectSection(SolutionItems) = preProject
 		Directory.Build.props = Directory.Build.props
+		Directory.Packages.props = Directory.Packages.props
 		Readme.md = Readme.md
 		License.txt = License.txt
 		global.json = global.json
diff --git a/PolyShim/PolyShim.csproj b/PolyShim/PolyShim.csproj
index fae85b18..e6f071c1 100644
--- a/PolyShim/PolyShim.csproj
+++ b/PolyShim/PolyShim.csproj
@@ -43,122 +43,103 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="CSharpier.MsBuild" Version="1.2.1" PrivateAssets="all" />
+    <PackageReference Include="CSharpier.MsBuild" PrivateAssets="all" />
   </ItemGroup>
 
   <!-- Import official compatibilty packages for metadata references -->
   <ItemGroup>
     <PackageReference
       Include="Microsoft.Bcl.AsyncInterfaces"
-      Version="8.0.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.AsyncInterfaces"
-      Version="8.0.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0')) AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '3.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.AsyncInterfaces"
-      Version="8.0.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.1'))"
     />
     <PackageReference
       Include="System.Management"
-      Version="8.0.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="System.Management"
-      Version="8.0.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0')) AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '5.0'))"
     />
     <PackageReference
       Include="System.Memory"
-      Version="4.5.5"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '1.1')) AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.1'))"
     />
     <PackageReference
       Include="System.Memory"
-      Version="4.5.5"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.1'))"
     />
     <PackageReference
       Include="System.Memory"
-      Version="4.5.5"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.1'))"
     />
     <PackageReference
       Include="System.ValueTuple"
-      Version="4.5.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="System.ValueTuple"
-      Version="4.5.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="System.ValueTuple"
-      Version="4.5.0"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.1'))"
     />
     <PackageReference
       Include="System.Threading.Tasks.Extensions"
-      Version="4.5.4"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="System.Threading.Tasks.Extensions"
-      Version="4.5.4"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.1'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.Async"
-      Version="1.0.168"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.Memory"
-      Version="9.0.1"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.6.2'))"
     />
     <PackageReference
       Include="Microsoft.Net.Http"
-      Version="2.2.29"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionEquals($(TargetFrameworkVersion), '4.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.TimeProvider"
-      Version="8.0.1"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.TimeProvider"
-      Version="8.0.1"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '2.0')) AND $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '8.0'))"
     />
     <PackageReference
       Include="Microsoft.Bcl.TimeProvider"
-      Version="8.0.1"
       PrivateAssets="all"
       Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework' AND $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '4.6.2'))"
     />