diff --git a/CHANGELOG.md b/CHANGELOG.md
index eba65dc8d8..0c91d44ca3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - PREVIEW: Moved the copy descriptions to dedicated folders. [#4310](https://github.com/microsoft/kiota/issues/4310)
 - PREVIEW: Renamed the config to workspace file. [#4310](https://github.com/microsoft/kiota/issues/4310)
 - Changed Csharp code generation to put braces on new lines (where it makes sense). [#4347](https://github.com/microsoft/kiota/issues/4347)
+- TypeScript is now a preview language!
 
 ## [1.12.0] - 2024-03-06
 
diff --git a/src/kiota/appsettings.json b/src/kiota/appsettings.json
index 7dbe24b66d..d4b156635a 100644
--- a/src/kiota/appsettings.json
+++ b/src/kiota/appsettings.json
@@ -129,7 +129,7 @@
       "DependencyInstallCommand": "go get {0}@{1}"
     },
     "TypeScript": {
-      "MaturityLevel": "Experimental",
+      "MaturityLevel": "Preview",
       "Dependencies": [
         {
           "Name": "@microsoft/kiota-abstractions",
@@ -284,4 +284,4 @@
       "DependencyInstallCommand": "dotnet add package {0} --version {1}"
     }
   }
-}
\ No newline at end of file
+}