diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69695a4..9c1bba3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.23] - 2026-06-22
+
+### Changed
+
+- `kind` field on `ObjectReference` is now required (was optional but API validates as mandatory)
+
+### Removed
+
+- Unused `ObjectReference2<Kind>` generic model
+
 ## [1.0.22] - 2026-06-18
 
 ### Fixed
@@ -206,7 +216,8 @@ First official stable release of the HyperFleet API specification.
 - Interactive API documentation
 
 <!-- Links -->
-[Unreleased]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.22...HEAD
+[Unreleased]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.23...HEAD
+[1.0.23]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.22...v1.0.23
 [1.0.22]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.21...v1.0.22
 [1.0.21]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.20...v1.0.21
 [1.0.20]: https://github.com/openshift-hyperfleet/hyperfleet-api-spec/compare/v1.0.18...v1.0.20
diff --git a/main.tsp b/main.tsp
index b068683..8ef0c8d 100644
--- a/main.tsp
+++ b/main.tsp
@@ -30,7 +30,7 @@ using OpenAPI;
  */
 @service(#{ title: "HyperFleet API" })
 @info(#{
-  version: "1.0.22",
+  version: "1.0.23",
   contact: #{
     name: "HyperFleet Team",
     url: "https://github.com/openshift-hyperfleet",
diff --git a/package-lock.json b/package-lock.json
index 68e09a5..f0ebe93 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "hyperfleet",
-  "version": "1.0.22",
+  "version": "1.0.23",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "hyperfleet",
-      "version": "1.0.22",
+      "version": "1.0.23",
       "devDependencies": {
         "@stoplight/spectral-cli": "6.15.1",
         "@typespec/compiler": "^1.6.0",
diff --git a/package.json b/package.json
index 0779718..9ca0f9f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hyperfleet",
-  "version": "1.0.22",
+  "version": "1.0.23",
   "type": "module",
   "exports": {
     "./*": "./*"
diff --git a/schemas/core/openapi.yaml b/schemas/core/openapi.yaml
index 9ea0d9c..0077cd0 100644
--- a/schemas/core/openapi.yaml
+++ b/schemas/core/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: HyperFleet API
-  version: 1.0.22
+  version: 1.0.23
   contact:
     name: HyperFleet Team
     url: https://github.com/openshift-hyperfleet
@@ -1766,6 +1766,7 @@ components:
     Cluster:
       type: object
       required:
+        - kind
         - name
         - spec
         - created_time
@@ -1879,6 +1880,7 @@ components:
     ClusterCreateRequest:
       type: object
       required:
+        - kind
         - name
         - spec
       properties:
@@ -2043,6 +2045,7 @@ components:
     NodePool:
       type: object
       required:
+        - kind
         - name
         - spec
         - created_time
@@ -2163,6 +2166,7 @@ components:
     NodePoolCreateRequest:
       type: object
       required:
+        - kind
         - name
         - spec
       properties:
@@ -2198,6 +2202,7 @@ components:
     NodePoolCreateResponse:
       type: object
       required:
+        - kind
         - name
         - spec
         - created_time
@@ -2342,6 +2347,8 @@ components:
         trace_id: deadbeef12345678
     ObjectReference:
       type: object
+      required:
+        - kind
       properties:
         id:
           type: string
diff --git a/shared/models/common/model.tsp b/shared/models/common/model.tsp
index 969aa0d..852cc26 100644
--- a/shared/models/common/model.tsp
+++ b/shared/models/common/model.tsp
@@ -23,20 +23,11 @@ model ObjectReference {
     ...ID;
 
     /** Resource kind */
-    kind?: string;
+    kind: string;
 
     /** Resource URI */
     href?: string;
 }
-model ObjectReference2<Kind> {
-    ...ID;
-
-    /** Resource kind */
-    kind: Kind;
-
-    /** Resource URI */
-    href: string;
-}
 
 /**
  * Field-level validation error detail