diff --git a/SlackNet.Tests/AgentSessionTitleChangedTests.cs b/SlackNet.Tests/AgentSessionTitleChangedTests.cs
new file mode 100644
index 0000000..c31e51a
--- /dev/null
+++ b/SlackNet.Tests/AgentSessionTitleChangedTests.cs
@@ -0,0 +1,51 @@
+using EasyAssertions;
+using Newtonsoft.Json;
+using NUnit.Framework;
+using SlackNet.Events;
+
+namespace SlackNet.Tests;
+
+public class AgentSessionTitleChangedTests
+{
+    private JsonSerializerSettings _sut;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _sut = Default.JsonSettings(Default.SlackTypeResolver(Default.AssembliesContainingSlackTypes)).SerializerSettings;
+    }
+
+    [Test]
+    public void AgentSessionTitleChanged_DeserializedFromSlackPayload()
+    {
+        var result = Deserialize<Event>(@"{ ""channel"": ""C0123ABC456"", ""event_ts"": ""1783536983.783769"", ""previous_title"": ""Scuba diving research"", ""team_id"": ""T0123ABC456"", ""thread_ts"": ""1782234671.392669"", ""title"": ""Bora Bora trip prep"", ""type"": ""agent_session_title_changed"", ""user"": ""U123ABC456"" }");
+
+        var changed = result.ShouldBeA<AgentSessionTitleChanged>().And;
+        changed.Channel.ShouldBe("C0123ABC456");
+        changed.ThreadTs.ShouldBe("1782234671.392669");
+        changed.User.ShouldBe("U123ABC456");
+        changed.Title.ShouldBe("Bora Bora trip prep");
+        changed.PreviousTitle.ShouldBe("Scuba diving research");
+        changed.EventTs.ShouldBe("1783536983.783769");
+    }
+
+    [Test]
+    public void AgentSessionTitleChanged_SessionHadNoTitle_HasNoPreviousTitle()
+    {
+        var result = Deserialize<Event>(@"{ ""type"": ""agent_session_title_changed"", ""channel"": ""C1"", ""thread_ts"": ""1.2"", ""user"": ""U1"", ""title"": ""First title"" }");
+
+        var changed = result.ShouldBeA<AgentSessionTitleChanged>().And;
+        changed.Title.ShouldBe("First title");
+        changed.PreviousTitle.ShouldBeNull();
+    }
+
+    [Test]
+    public void AgentSessionTitleChanged_InSessionChannel_MayHaveNoThread()
+    {
+        var result = Deserialize<Event>(@"{ ""type"": ""agent_session_title_changed"", ""channel"": ""C1"", ""user"": ""U1"", ""title"": ""Renamed"" }");
+
+        result.ShouldBeA<AgentSessionTitleChanged>().And.ThreadTs.ShouldBeNull();
+    }
+
+    private T Deserialize<T>(string json) => JsonConvert.DeserializeObject<T>(json, _sut);
+}
diff --git a/SlackNet/Events/AgentSessionTitleChanged.cs b/SlackNet/Events/AgentSessionTitleChanged.cs
new file mode 100644
index 0000000..3c8739e
--- /dev/null
+++ b/SlackNet/Events/AgentSessionTitleChanged.cs
@@ -0,0 +1,35 @@
+namespace SlackNet.Events;
+
+/// <summary>
+/// Sent when a user changes the title of an agent session, even if the agent previously set that title.
+/// If your agent keeps sessions in sync between Slack and your own UI, reflect the user's title change accordingly.
+/// To set a session's title from your app, use <c>agents.sessions.rename</c>.
+/// </summary>
+/// <remarks>See the <a href="https://docs.slack.dev/reference/events/agent_session_title_changed/">Slack documentation</a> for more information.</remarks>
+public class AgentSessionTitleChanged : Event
+{
+    /// <summary>
+    /// The channel containing the session.
+    /// </summary>
+    public string Channel { get; set; }
+
+    /// <summary>
+    /// The root of the thread the session is scoped to.
+    /// </summary>
+    public string ThreadTs { get; set; }
+
+    /// <summary>
+    /// The user who changed the title.
+    /// </summary>
+    public string User { get; set; }
+
+    /// <summary>
+    /// The new title of the session.
+    /// </summary>
+    public string Title { get; set; }
+
+    /// <summary>
+    /// The title of the session before the change. Omitted when the session had no title before the change.
+    /// </summary>
+    public string PreviousTitle { get; set; }
+}