diff --git a/.github/workflows/perf.yml b/.github/workflows/perf.yml
index e4c4c7413..79ac4aaf8 100644
--- a/.github/workflows/perf.yml
+++ b/.github/workflows/perf.yml
@@ -13,7 +13,8 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - branch: dev
+          - branch: release/v2.9.23
+          - branch: latest
           - branch: main
     runs-on: ubuntu-latest
     env:
@@ -23,7 +24,9 @@ jobs:
     steps:
       - name: Install nats
         run: |
-          rel=$(curl -s https://api.github.com/repos/nats-io/natscli/releases/latest | jq -r .tag_name | sed s/v//)
+          # latest 0.1.1 doesn't have binaries
+          # rel=$(curl -s https://api.github.com/repos/nats-io/natscli/releases/latest | jq -r .tag_name | sed s/v//)
+          rel=0.1.0
           wget https://github.com/nats-io/natscli/releases/download/v$rel/nats-$rel-linux-amd64.zip
           unzip nats-$rel-linux-amd64.zip
           sudo mv nats-$rel-linux-amd64/nats /usr/local/bin
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cee691711..eea223ad3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,8 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - branch: dev
+          - branch: release/v2.9.23
+          - branch: latest
           - branch: main
     runs-on: ubuntu-latest
     env:
@@ -55,7 +56,8 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - branch: dev
+          - branch: release/v2.9.23
+          - branch: latest
           - branch: main
     runs-on: windows-latest
     env:
diff --git a/src/NATS.Client.JetStream/Models/StreamSource.cs b/src/NATS.Client.JetStream/Models/StreamSource.cs
index 5c84a38da..5c19e7f4f 100644
--- a/src/NATS.Client.JetStream/Models/StreamSource.cs
+++ b/src/NATS.Client.JetStream/Models/StreamSource.cs
@@ -39,11 +39,11 @@ public record StreamSource
     public string FilterSubject { get; set; } = default!;
 
     /// <summary>
-    /// Map matching subjects according to this transform destination
+    /// Subject transforms to apply to matching messages
     /// </summary>
-    [System.Text.Json.Serialization.JsonPropertyName("subject_transform_dest")]
+    [System.Text.Json.Serialization.JsonPropertyName("subject_transforms")]
     [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
-    public string SubjectTransformDest { get; set; } = default!;
+    public System.Collections.Generic.ICollection<SubjectTransform> SubjectTransforms { get; set; } = default!;
 
     [System.Text.Json.Serialization.JsonPropertyName("external")]
     [System.Text.Json.Serialization.JsonIgnore(Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingDefault)]
diff --git a/tests/NATS.Client.Core.Tests/RequestReplyTest.cs b/tests/NATS.Client.Core.Tests/RequestReplyTest.cs
index 8d0b081ae..699c7efc1 100644
--- a/tests/NATS.Client.Core.Tests/RequestReplyTest.cs
+++ b/tests/NATS.Client.Core.Tests/RequestReplyTest.cs
@@ -12,7 +12,9 @@ public class RequestReplyTest
     [Fact]
     public async Task Simple_request_reply_test()
     {
-        await using var server = NatsServer.Start();
+        // Trace to hunt flapper!
+        await using var server = NatsServer.StartWithTrace(_output);
+
         await using var nats = server.CreateClientConnection();
 
         var sub = await nats.SubscribeAsync<int>("foo");
diff --git a/tests/NATS.Client.JetStream.Tests/ConsumerConsumeTest.cs b/tests/NATS.Client.JetStream.Tests/ConsumerConsumeTest.cs
index 0dec6922d..97fcf9106 100644
--- a/tests/NATS.Client.JetStream.Tests/ConsumerConsumeTest.cs
+++ b/tests/NATS.Client.JetStream.Tests/ConsumerConsumeTest.cs
@@ -79,7 +79,7 @@ await Retry.Until(
     public async Task Consume_idle_heartbeat_test()
     {
         var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
-        await using var server = NatsServer.StartJS();
+        await using var server = NatsServer.StartJSWithTrace(_output);
 
         var (nats, proxy) = server.CreateProxiedClientConnection();
 
@@ -120,14 +120,29 @@ public async Task Consume_idle_heartbeat_test()
 
         await Retry.Until(
             "all pull requests are received",
-            () => proxy.ClientFrames.Count(f => f.Message.StartsWith("PUB $JS.API.CONSUMER.MSG.NEXT.s1.c1")) == 2);
+            () => proxy.ClientFrames.Count(f => f.Message.StartsWith("PUB $JS.API.CONSUMER.MSG.NEXT.s1.c1")) >= 2);
 
         var msgNextRequests = proxy
             .ClientFrames
             .Where(f => f.Message.StartsWith("PUB $JS.API.CONSUMER.MSG.NEXT.s1.c1"))
             .ToList();
 
-        Assert.Equal(2, msgNextRequests.Count);
+        // In some cases we are receiving more than two requests which
+        // is possible if the tests are running in a slow container and taking
+        // more than the timeout? Looking at the test and the code I can't make
+        // sense of it, really, but I'm going to assume it's fine to receive 3 pull
+        // requests as well as 2 since test failure reported 3 and failed once.
+        if (msgNextRequests.Count > 2)
+        {
+            _output.WriteLine($"Pull request count more than expected: {msgNextRequests.Count}");
+            foreach (var frame in msgNextRequests)
+            {
+                _output.WriteLine($"PULL REQUEST: {frame}");
+            }
+        }
+
+        // Still fail and check traces if it happens again
+        Assert.True(msgNextRequests.Count is 2);
 
         // Pull requests
         foreach (var frame in msgNextRequests)
diff --git a/tests/NATS.Client.TestUtilities/NatsServer.cs b/tests/NATS.Client.TestUtilities/NatsServer.cs
index 40c43f96c..1805bd67b 100644
--- a/tests/NATS.Client.TestUtilities/NatsServer.cs
+++ b/tests/NATS.Client.TestUtilities/NatsServer.cs
@@ -142,6 +142,14 @@ public int ConnectionPort
 
     public static NatsServer StartJS() => StartJS(new NullOutputHelper(), TransportType.Tcp);
 
+    public static NatsServer StartJSWithTrace(ITestOutputHelper outputHelper) => Start(
+        outputHelper: outputHelper,
+        opts: new NatsServerOptsBuilder()
+            .UseTransport(TransportType.Tcp)
+            .Trace()
+            .UseJetStream()
+            .Build());
+
     public static NatsServer StartJS(ITestOutputHelper outputHelper, TransportType transportType) => Start(
         outputHelper: outputHelper,
         opts: new NatsServerOptsBuilder()
@@ -151,7 +159,13 @@ public static NatsServer StartJS(ITestOutputHelper outputHelper, TransportType t
 
     public static NatsServer Start() => Start(new NullOutputHelper(), TransportType.Tcp);
 
-    public static NatsServer Start(ITestOutputHelper outputHelper) => Start(outputHelper, TransportType.Tcp);
+    public static NatsServer StartWithTrace(ITestOutputHelper outputHelper)
+        => Start(
+            outputHelper,
+            new NatsServerOptsBuilder()
+                .Trace()
+                .UseTransport(TransportType.Tcp)
+                .Build());
 
     public static NatsServer Start(ITestOutputHelper outputHelper, TransportType transportType) =>
         Start(outputHelper, new NatsServerOptsBuilder().UseTransport(transportType).Build());