diff --git a/CLAUDE.md b/CLAUDE.md
index fa76543..8283e74 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -27,7 +27,7 @@ The library itself does **not** reference `Pure.Primitives.Abstractions` as a Nu
 
 **Test project** (`src/Tests/`): xUnit, targets net10.0. Tests directly instantiate `PrimitivesDocumentTransformer`, pass hand-crafted `OpenApiDocument` instances, and assert the resulting schema type and format.
 
-**Package validation:** `EnablePackageValidation = true` with `PackageValidationBaselineVersion = 0.1.0-preview.0.3.0`. Breaking changes fail the build.
+**Package validation:** `EnablePackageValidation = true` with `PackageValidationBaselineVersion = 0.1.0-preview.0.3.1`. Breaking changes fail the build.
 
 **AOT:** `IsAotCompatible = true`. Keep all new code AOT-safe (no reflection over unknown types, no `dynamic`).
 
diff --git a/src/Pure.Primitives.Abstractions.OpenAPI.Schema/Pure.Primitives.Abstractions.OpenAPI.Schema.csproj b/src/Pure.Primitives.Abstractions.OpenAPI.Schema/Pure.Primitives.Abstractions.OpenAPI.Schema.csproj
index d5c6e3c..5a39ffd 100644
--- a/src/Pure.Primitives.Abstractions.OpenAPI.Schema/Pure.Primitives.Abstractions.OpenAPI.Schema.csproj
+++ b/src/Pure.Primitives.Abstractions.OpenAPI.Schema/Pure.Primitives.Abstractions.OpenAPI.Schema.csproj
@@ -6,7 +6,7 @@
     <LangVersion>latest</LangVersion>
     <IsAotCompatible>true</IsAotCompatible>
     <EnablePackageValidation>true</EnablePackageValidation>
-    <PackageValidationBaselineVersion>0.1.0-preview.0.3.0</PackageValidationBaselineVersion>
+    <PackageValidationBaselineVersion>0.1.0-preview.0.3.1</PackageValidationBaselineVersion>
   </PropertyGroup>
   <PropertyGroup>
     <PackageId>Pure.Primitives.Abstractions.OpenAPI.Schema</PackageId>