chore(main): release 3.9.0

Author: release-please-token-provider[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "3.8.0"
+  ".": "3.9.0"
 }

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## [3.9.0](https://github.com/microsoft/OpenAPI.NET/compare/v3.8.0...v3.9.0) (2026-07-13)
+
+
+### Features
+
+* adds support for anchor and id external resolution ([1591007](https://github.com/microsoft/OpenAPI.NET/commit/15910070f2bf3006f79e1c43dd9c2b56e45d665c))
+
+
+### Bug Fixes
+
+* default mapping is not being serialized with the correct shape ([fe4a25f](https://github.com/microsoft/OpenAPI.NET/commit/fe4a25f1f25c853404540d30f11812f1208f93c9))
+* handle nullability more accurately during serialization for 3.0/2.0 ([#2933](https://github.com/microsoft/OpenAPI.NET/issues/2933)) ([0ace243](https://github.com/microsoft/OpenAPI.NET/commit/0ace243ebbabe82aacc52d49fe58f54f039bdf76))
+
 ## [3.8.0](https://github.com/microsoft/OpenAPI.NET/compare/v3.7.0...v3.8.0) (2026-07-03)
 
 

Directory.Build.props

@@ -12,7 +12,7 @@
     <PackageProjectUrl>https://github.com/Microsoft/OpenAPI.NET</PackageProjectUrl>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <PackageTags>OpenAPI .NET</PackageTags>
-    <Version>3.8.0</Version>
+    <Version>3.9.0</Version>
   </PropertyGroup>
   <!-- https://github.com/clairernovotny/DeterministicBuilds#deterministic-builds -->
   <PropertyGroup Condition="'$(TF_BUILD)' == 'true'">