diff --git a/samples/HtmlWidgetBot/HtmlWidgetBot.csproj b/samples/HtmlWidgetBot/HtmlWidgetBot.csproj
index c46f1df6..a718b9f3 100644
--- a/samples/HtmlWidgetBot/HtmlWidgetBot.csproj
+++ b/samples/HtmlWidgetBot/HtmlWidgetBot.csproj
@@ -4,7 +4,7 @@
 		<TargetFramework>net10.0</TargetFramework>
 		<Nullable>enable</Nullable>
 		<ImplicitUsings>enable</ImplicitUsings>
-		<NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget;ExperimentalTeamsExtendedMarkdown</NoWarn>
+		<NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget</NoWarn>
 	</PropertyGroup>
 
 	<ItemGroup>
diff --git a/samples/StreamingBot/Program.cs b/samples/StreamingBot/Program.cs
index 61c5ba37..228615e5 100644
--- a/samples/StreamingBot/Program.cs
+++ b/samples/StreamingBot/Program.cs
@@ -200,7 +200,6 @@ static async Task RunExtendedMarkdownDemoAsync(TeamsStreamingWriter writer, Canc
         "- [x] Strikethrough renders too\n",
     ];
 
-#pragma warning disable ExperimentalTeamsExtendedMarkdown
     // The informative update carries its own format (plain markdown here); the streamed chunks
     // set extended markdown per-chunk via MessageActivityInput, which also formats the final message.
     await writer.SendInformativeUpdateAsync("Starting the *extended* markdown stream…", TextFormats.Markdown, cancellationToken);
@@ -211,7 +210,6 @@ static async Task RunExtendedMarkdownDemoAsync(TeamsStreamingWriter writer, Canc
         await Task.Delay(500, cancellationToken);
         await writer.AppendResponseAsync(new MessageActivityInput().WithText(message, TextFormats.ExtendedMarkdown), cancellationToken);
     }
-#pragma warning restore ExperimentalTeamsExtendedMarkdown
 
     await writer.FinalizeResponseAsync(cancellationToken: cancellationToken);
 }
diff --git a/samples/TeamsBot/Program.cs b/samples/TeamsBot/Program.cs
index 05aca836..ae06356a 100644
--- a/samples/TeamsBot/Program.cs
+++ b/samples/TeamsBot/Program.cs
@@ -61,7 +61,6 @@ await context.SendAsync(
 // Extended Markdown handler: matches "extendedMarkdown" (case-insensitive)
 teamsApp.OnMessage("(?i)^extendedMarkdown$", async (context, cancellationToken) =>
 {
-#pragma warning disable ExperimentalTeamsExtendedMarkdown
     MessageActivityInput extendedMarkdownMessage = new MessageActivityInput()
         .WithText("""
 # Extended Markdown Demo
@@ -76,7 +75,6 @@ await context.SendAsync(
 $$E = mc^2$$
 """, TextFormats.ExtendedMarkdown)
         ;
-#pragma warning restore ExperimentalTeamsExtendedMarkdown
 
     await context.SendAsync(extendedMarkdownMessage, cancellationToken);
 });
diff --git a/src/Microsoft.Teams.Apps/Handlers/MessageHandlers.Activities.cs b/src/Microsoft.Teams.Apps/Handlers/MessageHandlers.Activities.cs
index 03d8717b..8281486a 100644
--- a/src/Microsoft.Teams.Apps/Handlers/MessageHandlers.Activities.cs
+++ b/src/Microsoft.Teams.Apps/Handlers/MessageHandlers.Activities.cs
@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
-using System.Diagnostics.CodeAnalysis;
 using System.Text.Json.Serialization;
 using System.Text.RegularExpressions;
 using Microsoft.Teams.Apps.Schema;
@@ -145,10 +144,6 @@ public class TextFormat(string value) : StringEnum(value)
     /// Extended markdown text format. Supports GFM tables, LaTeX math blocks,
     /// and other rich content beyond standard markdown.
     /// </summary>
-    /// <remarks>
-    /// This format is currently in public preview and may be subject to change.
-    /// </remarks>
-    [Experimental("ExperimentalTeamsExtendedMarkdown")]
     public static readonly TextFormat ExtendedMarkdown = new("extendedmarkdown");
 }
 
@@ -176,10 +171,6 @@ public static class TextFormats
     /// Extended markdown text format. Supports GFM tables, LaTeX math blocks,
     /// and other rich content beyond standard markdown.
     /// </summary>
-    /// <remarks>
-    /// This format is currently in public preview and may be subject to change.
-    /// </remarks>
-    [Experimental("ExperimentalTeamsExtendedMarkdown")]
     public static TextFormat ExtendedMarkdown => TextFormat.ExtendedMarkdown;
 }
 
diff --git a/test/IntegrationTests/IntegrationTests.csproj b/test/IntegrationTests/IntegrationTests.csproj
index 6f924085..f2ceeaf8 100644
--- a/test/IntegrationTests/IntegrationTests.csproj
+++ b/test/IntegrationTests/IntegrationTests.csproj
@@ -5,7 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
-	<NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget;ExperimentalTeamsExtendedMarkdown;CS0618</NoWarn>
+	<NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget;CS0618</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/test/Microsoft.Teams.Apps.UnitTests/MessageActivityTests.cs b/test/Microsoft.Teams.Apps.UnitTests/MessageActivityTests.cs
index ead5f017..93cf91ce 100644
--- a/test/Microsoft.Teams.Apps.UnitTests/MessageActivityTests.cs
+++ b/test/Microsoft.Teams.Apps.UnitTests/MessageActivityTests.cs
@@ -69,9 +69,7 @@ public void MessageActivity_Constants_TextFormats()
         activity.TextFormat = TextFormats.Xml;
         Assert.Equal("xml", activity.TextFormat!.ToString());
 
-#pragma warning disable ExperimentalTeamsExtendedMarkdown
         activity.TextFormat = TextFormats.ExtendedMarkdown;
-#pragma warning restore ExperimentalTeamsExtendedMarkdown
         Assert.Equal("extendedmarkdown", activity.TextFormat!.ToString());
     }
 
diff --git a/test/Microsoft.Teams.Apps.UnitTests/Microsoft.Teams.Apps.UnitTests.csproj b/test/Microsoft.Teams.Apps.UnitTests/Microsoft.Teams.Apps.UnitTests.csproj
index e739d652..f8cb7012 100644
--- a/test/Microsoft.Teams.Apps.UnitTests/Microsoft.Teams.Apps.UnitTests.csproj
+++ b/test/Microsoft.Teams.Apps.UnitTests/Microsoft.Teams.Apps.UnitTests.csproj
@@ -5,7 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
-    <NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget;ExperimentalTeamsExtendedMarkdown;ExperimentalTeamsSocketMode</NoWarn>
+    <NoWarn>$(NoWarn);ExperimentalTeamsHtmlWidget;ExperimentalTeamsSocketMode</NoWarn>
   </PropertyGroup>
 
   <ItemGroup>