diff --git a/Directory.Packages.props b/Directory.Packages.props
new file mode 100644
index 0000000..ff2be35
--- /dev/null
+++ b/Directory.Packages.props
@@ -0,0 +1,38 @@
+<Project>
+
+  <!--
+    Central Package Management (CPM). One source of truth for every NuGet version in the repository: projects
+    declare <PackageReference Include="..." /> WITHOUT a Version, and the version is resolved from the matching
+    <PackageVersion> below. This keeps versions consistent across the projects and makes the `dotnet restore`
+    steps in ci.yml / release.yml reproducible — which is also what OpenSSF Scorecard's Pinned-Dependencies
+    check rewards (an unpinned restore otherwise caps that check below 10, via "nugetCommand not pinned").
+
+    Two deliberate exceptions:
+      * FirstClassErrors.Analyzers pins Microsoft.CodeAnalysis.CSharp to $(RoslynFloorVersion) via a
+        VersionOverride, so the load-contract floor stays property-driven and independent of the (newer)
+        central version the analyzer test project consumes.
+      * tools/floor-check/FloorCheck.csproj opts OUT of CPM (ManagePackageVersionsCentrally=false): it consumes
+        the FirstClassErrors package at a dynamic $(FloorCheckVersion) and is built in isolation, outside the
+        solution.
+  -->
+  <PropertyGroup>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageVersion Include="coverlet.collector" Version="10.0.1" />
+    <PackageVersion Include="FsCheck" Version="3.3.3" />
+    <PackageVersion Include="JetBrains.Annotations" Version="2026.2.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.6.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
+    <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
+    <PackageVersion Include="NFluent" Version="3.1.0" />
+    <PackageVersion Include="NSubstitute" Version="5.3.0" />
+    <PackageVersion Include="Spectre.Console.Cli" Version="0.55.0" />
+    <PackageVersion Include="Verify.XunitV3" Version="31.22.0" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageVersion Include="xunit.v3" Version="3.2.2" />
+  </ItemGroup>
+
+</Project>
diff --git a/FirstClassErrors.Analyzers.UnitTests/FirstClassErrors.Analyzers.UnitTests.csproj b/FirstClassErrors.Analyzers.UnitTests/FirstClassErrors.Analyzers.UnitTests.csproj
index 710c84f..cf3ef08 100644
--- a/FirstClassErrors.Analyzers.UnitTests/FirstClassErrors.Analyzers.UnitTests.csproj
+++ b/FirstClassErrors.Analyzers.UnitTests/FirstClassErrors.Analyzers.UnitTests.csproj
@@ -8,18 +8,18 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.6.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageReference Include="NFluent" Version="3.1.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="NFluent" />
+    <PackageReference Include="xunit.runner.visualstudio">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors.Analyzers/FirstClassErrors.Analyzers.csproj b/FirstClassErrors.Analyzers/FirstClassErrors.Analyzers.csproj
index ad1433b..e092dc2 100644
--- a/FirstClassErrors.Analyzers/FirstClassErrors.Analyzers.csproj
+++ b/FirstClassErrors.Analyzers/FirstClassErrors.Analyzers.csproj
@@ -21,9 +21,11 @@
          and loaded by each consumer's compiler, so a higher version makes it silently fail to load (CS8032)
          on older SDKs/IDEs. The floor lives once in Directory.Build.props and is enforced by RoslynFloorTests.
          Microsoft.CodeAnalysis.Analyzers is only a build-time authoring analyzer (PrivateAssets=all), not part
-         of the load contract, so it is free to move. -->
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(RoslynFloorVersion)" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="5.6.0" PrivateAssets="all">
+         of the load contract, so it is free to move. Under Central Package Management (Directory.Packages.props)
+         the floor is expressed as a VersionOverride so it stays property-driven and independent of the newer
+         central Microsoft.CodeAnalysis.CSharp version the analyzer tests consume. -->
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" VersionOverride="$(RoslynFloorVersion)" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" PrivateAssets="all">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
   </ItemGroup>
diff --git a/FirstClassErrors.Cli.UnitTests/FirstClassErrors.Cli.UnitTests.csproj b/FirstClassErrors.Cli.UnitTests/FirstClassErrors.Cli.UnitTests.csproj
index a442664..3307e50 100644
--- a/FirstClassErrors.Cli.UnitTests/FirstClassErrors.Cli.UnitTests.csproj
+++ b/FirstClassErrors.Cli.UnitTests/FirstClassErrors.Cli.UnitTests.csproj
@@ -8,18 +8,18 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageReference Include="NFluent" Version="3.1.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="NFluent" />
+    <PackageReference Include="xunit.runner.visualstudio">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors.Cli/FirstClassErrors.Cli.csproj b/FirstClassErrors.Cli/FirstClassErrors.Cli.csproj
index e61c78a..34af61c 100644
--- a/FirstClassErrors.Cli/FirstClassErrors.Cli.csproj
+++ b/FirstClassErrors.Cli/FirstClassErrors.Cli.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Spectre.Console.Cli" Version="0.55.0" />
+    <PackageReference Include="Spectre.Console.Cli" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors.GenDoc.UnitTests/FirstClassErrors.GenDoc.UnitTests.csproj b/FirstClassErrors.GenDoc.UnitTests/FirstClassErrors.GenDoc.UnitTests.csproj
index d959a7a..0aeccb3 100644
--- a/FirstClassErrors.GenDoc.UnitTests/FirstClassErrors.GenDoc.UnitTests.csproj
+++ b/FirstClassErrors.GenDoc.UnitTests/FirstClassErrors.GenDoc.UnitTests.csproj
@@ -8,19 +8,19 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageReference Include="NFluent" Version="3.1.0" />
-    <PackageReference Include="Verify.XunitV3" Version="31.22.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="NFluent" />
+    <PackageReference Include="Verify.XunitV3" />
+    <PackageReference Include="xunit.runner.visualstudio">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors.PropertyTests/FirstClassErrors.PropertyTests.csproj b/FirstClassErrors.PropertyTests/FirstClassErrors.PropertyTests.csproj
index 43ae738..9c41763 100644
--- a/FirstClassErrors.PropertyTests/FirstClassErrors.PropertyTests.csproj
+++ b/FirstClassErrors.PropertyTests/FirstClassErrors.PropertyTests.csproj
@@ -8,20 +8,20 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <!-- FsCheck drives the property-based (fuzzing-style) tests. The bare `using FsCheck;` in each test file
          is also what OpenSSF Scorecard's Fuzzing check looks for to credit C# property-based testing. -->
-    <PackageReference Include="FsCheck" Version="3.3.3" />
-    <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="FsCheck" />
+    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="xunit.runner.visualstudio">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors.Testing/FirstClassErrors.Testing.csproj b/FirstClassErrors.Testing/FirstClassErrors.Testing.csproj
index 170698e..5d130f4 100644
--- a/FirstClassErrors.Testing/FirstClassErrors.Testing.csproj
+++ b/FirstClassErrors.Testing/FirstClassErrors.Testing.csproj
@@ -58,7 +58,7 @@
          (_manifest/spdx_2.2/manifest.spdx.json), so the inventory of files and dependencies travels with
          the artifact and is covered by the release's provenance attestation. Build-time only
          (PrivateAssets=all): consumers never see this as a dependency. -->
-    <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.Sbom.Targets" PrivateAssets="all" />
   </ItemGroup>
 
 </Project>
diff --git a/FirstClassErrors.UnitTests/FirstClassErrors.UnitTests.csproj b/FirstClassErrors.UnitTests/FirstClassErrors.UnitTests.csproj
index e917431..2f8010a 100644
--- a/FirstClassErrors.UnitTests/FirstClassErrors.UnitTests.csproj
+++ b/FirstClassErrors.UnitTests/FirstClassErrors.UnitTests.csproj
@@ -8,19 +8,19 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="10.0.1">
+    <PackageReference Include="coverlet.collector">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="JetBrains.Annotations" Version="2026.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
-    <PackageReference Include="NFluent" Version="3.1.0" />
-    <PackageReference Include="NSubstitute" Version="5.3.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="NFluent" />
+    <PackageReference Include="NSubstitute" />
+    <PackageReference Include="xunit.runner.visualstudio">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="xunit.v3" Version="3.2.2" />
+    <PackageReference Include="xunit.v3" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/FirstClassErrors/FirstClassErrors.csproj b/FirstClassErrors/FirstClassErrors.csproj
index 73022e6..2a400a7 100644
--- a/FirstClassErrors/FirstClassErrors.csproj
+++ b/FirstClassErrors/FirstClassErrors.csproj
@@ -64,7 +64,7 @@
          (_manifest/spdx_2.2/manifest.spdx.json), so the inventory of files and dependencies travels with
          the artifact and is covered by the release's provenance attestation. Build-time only
          (PrivateAssets=all): consumers never see this as a dependency. -->
-    <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.5" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.Sbom.Targets" PrivateAssets="all" />
   </ItemGroup>
 
   <!-- Ship the analyzers inside this package (analyzers/dotnet/cs) so package consumers get them automatically.
diff --git a/tools/floor-check/FloorCheck.csproj b/tools/floor-check/FloorCheck.csproj
index 209ddda..e2068bd 100644
--- a/tools/floor-check/FloorCheck.csproj
+++ b/tools/floor-check/FloorCheck.csproj
@@ -29,6 +29,10 @@
          stays the only escalation. -->
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <MSBuildTreatWarningsAsErrors>false</MSBuildTreatWarningsAsErrors>
+    <!-- Opt out of repo-wide Central Package Management (Directory.Packages.props, imported from the repo
+         root): this project consumes the FirstClassErrors package at a dynamic $(FloorCheckVersion) and is
+         built in isolation, outside the solution, so it keeps its version inline. -->
+    <ManagePackageVersionsCentrally>false</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <PropertyGroup>