diff --git a/src/KArtSell.Modules.ModelOperations/ShadowRun/Services/KrxDataService.cs b/src/KArtSell.Modules.ModelOperations/ShadowRun/Services/KrxDataService.cs
index 75dc14b6..4ff30075 100644
--- a/src/KArtSell.Modules.ModelOperations/ShadowRun/Services/KrxDataService.cs
+++ b/src/KArtSell.Modules.ModelOperations/ShadowRun/Services/KrxDataService.cs
@@ -19,7 +19,7 @@ public sealed class KrxDataService : IKrxDataService
     private const int MaxRetries = 3;
     private const int InitialBackoffMs = 100;
     private const int MaxBackoffMs = 30000;
-    private const string KrxApiBaseUrl = "https://data.krx.co.kr";
+    private const string KrxApiBaseUrl = "https://openapi.krx.co.kr";  // From appsettings: ExternalApis:KrxOpenApi:BaseUrl
     private const string KrxApiEndpoint = "/svc/sample/apis/idx/krx_dd_trd";
 
     private static readonly Action<ILogger, string, DateOnly, DateOnly, Exception?> LogFetchingOhlcv =