diff --git a/ai/vector-search-dotnet/appsettings.json b/ai/vector-search-dotnet/appsettings.json
index 0c5afe2..667d110 100644
--- a/ai/vector-search-dotnet/appsettings.json
+++ b/ai/vector-search-dotnet/appsettings.json
@@ -1,7 +1,7 @@
 {
   "AzureOpenAI": {
     "EmbeddingModel": "text-embedding-3-small",
-    "ApiVersion": "2024-08-01-preview",
+    "ApiVersion": "2023-05-15",
     "Endpoint": "https://<your-openai-service-name>.openai.azure.com/"
   },
   "DataFiles": {