Unity-Technologies
@@ -51,7 +51,7 @@ def main():
         # Extract the version, providing a default if not found
         local_package_version = local_package_data.get('version', 'N/A')
 
-        print(f"--> Verified local '{args.package-name}' version is: {local_package_version}")
+        print(f"--> Verified local '{args.package_name}' version is: {local_package_version}")
 
     except FileNotFoundError:
         print(f"Warning: Could not find package.json at '{local_package_json_path}'")

@@ -6,21 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).
 
-## [Unreleased]
+## [2.13.1] - 2026-07-19
 
 ### Added
 
 - Single player session section to provide users with information about `SinglePlayerTransport` and an example script of how to switch between single and multi player sessions. (#4062)
 
-### Changed
-
-
-### Deprecated
-
-
-### Removed
-
-
 ### Fixed
 
 - Issue where `NetworkAnimator` did no bounds check on the parameter index read prior to obtaining a pointer to the location within the array. (#4090)
@@ -33,12 +24,6 @@ Additional documentation and release notes are available at [Multiplayer Documen
 - Issue where NetworkRigidbodyBase was always checking the 3D rigid body's interpolation mode when determining if it is kinematic and needs to put the rigid body to sleep and then switch to interpolation. (#4012)
 - Fixed AnticipatedNetworkTransform not respecting the InLocalSpace flag. (#3995)
 
-### Security
-
-
-### Obsolete
-
-
 ## [2.13.0] - 2026-06-21
 
 ### Added

@@ -53,6 +53,7 @@ protected override void OnServerAndClientsCreated()
 
 
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
         public IEnumerator DeferredDespawning()
         {
             // Setup for test

@@ -155,6 +155,7 @@ private bool AllNetworkClientsValidated()
         /// Validates the same thing when a client late joins and when a client disconnects.
         /// </summary>
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149595", "ValidateNetworkClients throws duplicate-key ArgumentException on CoreCLR (DAHost)")]
         public IEnumerator ValidateNetworkClients()
         {
             // Validate the initial clients created

@@ -151,6 +151,7 @@ protected override void OnNewClientCreated(NetworkManager networkManager)
         }
 
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
         public IEnumerator SwitchTransportTest()
         {
             var authority = GetAuthorityNetworkManager();

@@ -173,6 +173,7 @@ private bool ValidateAllAreEqual(StringBuilder errorLog)
         }
 
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
         public IEnumerator TestHealthCode()
         {
             var authority = GetAuthorityNetworkManager();

@@ -94,6 +94,7 @@ protected override void OnNewClientCreated(NetworkManager networkManager)
         }
 
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149591", "NGO multi-instance test sessions fail to start/connect or time out on CoreCLR")]
         public IEnumerator NetworkObjectDeserializationFailure()
         {
             m_CurrentLogLevel = LogLevel.Nothing;
@@ -277,6 +278,7 @@ private void ValidateNetworkBehaviourWithNetworkVariables(NetworkObject authorit
         /// will still be initialized properly
         /// </summary>
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149591", "NGO multi-instance test sessions fail to start/connect or time out on CoreCLR")]
         public IEnumerator NetworkBehaviourSynchronization()
         {
             var authority = GetAuthorityNetworkManager();
@@ -319,6 +321,7 @@ public IEnumerator NetworkBehaviourSynchronization()
         /// A basic validation for the NetworkBehaviour.OnSynchronize method
         /// </summary>
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149591", "NGO multi-instance test sessions fail to start/connect or time out on CoreCLR")]
         public IEnumerator NetworkBehaviourOnSynchronize()
         {
             var authority = GetAuthorityNetworkManager();

@@ -244,6 +244,7 @@ void TestForceUpdateCallback(NetworkListEvent<int> _)
 
         // don't extend this please
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
         public IEnumerator LegacyPredicateTesting()
         {
             var authority = GetAuthorityNetworkManager();

@@ -3,6 +3,7 @@
 using NUnit.Framework;
 using Unity.Netcode.TestHelpers.Runtime;
 using UnityEngine;
+using UnityEngine.TestTools;
 
 namespace Unity.Netcode.RuntimeTests
 {
@@ -58,6 +59,7 @@ public void SetReanticipateValueRpc(float f)
         }
     }
 
+    [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149591", "NGO multi-instance test sessions fail to start/connect or time out on CoreCLR")]
     internal class NetworkVariableAnticipationTests : NetcodeIntegrationTest
     {
         protected override int NumberOfClients => 2;

@@ -17,6 +17,7 @@ namespace Unity.Netcode.RuntimeTests
     [TestFixture(HostOrServer.Host, CollectionTypes.Dictionary)]
     [TestFixture(HostOrServer.Server, CollectionTypes.List)]
     [TestFixture(HostOrServer.Server, CollectionTypes.Dictionary)]
+    [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
     internal class NetworkVariableCollectionsChangingTests : NetcodeIntegrationTest
     {
         protected override int NumberOfClients => 2;

@@ -22,6 +22,7 @@ namespace Unity.Netcode.RuntimeTests
     /// </summary>
     [TestFixture(HostOrServer.Host)]
     [TestFixture(HostOrServer.Server)]
+    [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149591", "NGO multi-instance test sessions fail to start/connect or time out on CoreCLR")]
     internal class NetworkVariableCollectionsTests : NetcodeIntegrationTest
     {
         protected override int NumberOfClients => 2;

@@ -140,6 +140,7 @@ private bool ChangedValueMatches(StringBuilder errorLog)
         /// instances invoke <see cref="NetworkBehaviour.OnNetworkSpawn"/>.
         /// </summary>
         [UnityTest]
+        [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
         public IEnumerator ApplyValueDuringSpawnSequence()
         {
             var authority = GetAuthorityNetworkManager();

@@ -11,6 +11,7 @@
 namespace Unity.Netcode.RuntimeTests
 {
     [TestFixtureSource(nameof(TestDataSource))]
+    [UnityCoreClrExplicitDisabled("https://jira.unity3d.com/browse/UUM-149592", "NGO NetworkVariable serialization codegen not generated for some types on CoreCLR (falls back to FallbackSerializer)")]
     internal class NetworkVariablePermissionTests : NetcodeIntegrationTest
     {
         public static IEnumerable<TestFixtureData> TestDataSource()