diff --git a/eng/Packages.Data.props b/eng/Packages.Data.props
index 4801bb7b3ee8..42399e63b149 100644
--- a/eng/Packages.Data.props
+++ b/eng/Packages.Data.props
@@ -167,7 +167,7 @@
     All should have PrivateAssets="All" set so they don't become package dependencies
   -->
   <ItemGroup>
-    <PackageReference Update="Microsoft.Azure.AutoRest.CSharp" Version="3.0.0-beta.20230508.2" PrivateAssets="All" />
+    <PackageReference Update="Microsoft.Azure.AutoRest.CSharp" Version="3.0.0-alpha.20230509.1" PrivateAssets="All" />
     <PackageReference Update="Azure.ClientSdk.Analyzers" Version="0.1.1-dev.20230131.1" PrivateAssets="All" />
     <PackageReference Update="coverlet.collector" Version="1.3.0" PrivateAssets="All" />
     <PackageReference Update="Microsoft.CodeAnalysis.NetAnalyzers" Version="7.0.1" PrivateAssets="All" />
diff --git a/eng/emitter-package.json b/eng/emitter-package.json
index 78032800c00c..4a17fc22653d 100644
--- a/eng/emitter-package.json
+++ b/eng/emitter-package.json
@@ -1,6 +1,6 @@
 {
     "main": "dist/src/index.js",
     "dependencies": {
-      "@azure-tools/typespec-csharp": "0.2.0-beta.20230508.2"
+      "@azure-tools/typespec-csharp": "0.2.0-alpha.20230509.1"
     }
 }