diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 125599f6..0f45954e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
   ".": "3.2.1",
-  "src/Microsoft.OpenApi.Hidi": "3.11.1"
+  "src/Microsoft.OpenApi.Hidi": "4.0.0"
 }
\ No newline at end of file
diff --git a/src/Microsoft.OpenApi.Hidi/CHANGELOG.md b/src/Microsoft.OpenApi.Hidi/CHANGELOG.md
index 94d044c1..095c4067 100644
--- a/src/Microsoft.OpenApi.Hidi/CHANGELOG.md
+++ b/src/Microsoft.OpenApi.Hidi/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Hidi changelog
 
+## [4.0.0](https://github.com/microsoft/OpenAPI.NET.OData/compare/hidi-v3.11.1...hidi-v4.0.0) (2026-11-12)
+
+
+### ⚠ BREAKING CHANGES
+
+* Microsoft.OpenApi.OData and Hidi now target .NET 10 only and require Microsoft.OData.Edm 9.x. Consumers on earlier runtimes or Edm 8.x must stay on the previous major version.
+
+### Bug Fixes
+
+* support Microsoft.OData.Edm 9 and drop .NET versions below 10 ([#940](https://github.com/microsoft/OpenAPI.NET.OData/issues/940)) ([2124246](https://github.com/microsoft/OpenAPI.NET.OData/commit/2124246ab2c1d16be5cfbf3b2ed46415141ffd19))
+
 ## [3.11.1](https://github.com/microsoft/OpenAPI.NET.OData/compare/hidi-v3.11.0...hidi-v3.11.1) (2026-11-06)
 
 
diff --git a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
index 72f92dce..c4406784 100644
--- a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
+++ b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
@@ -9,7 +9,7 @@
     <Nullable>enable</Nullable>
     <ToolCommandName>hidi</ToolCommandName>
     <PackageId>Microsoft.OpenApi.Hidi</PackageId>
-    <Version>3.11.1</Version>
+    <Version>4.0.0</Version>
     <PackageOutputPath>$(MSBuildThisFileDirectory)..\..\artifacts\hidi\nuget</PackageOutputPath>
     <Description>OpenAPI.NET CLI tool for slicing OpenAPI documents</Description>
     <SignAssembly>true</SignAssembly>