diff --git a/GSR/Deploy/Program.cs b/GSR/Deploy/Program.cs
index 9017895..79ad2d7 100644
--- a/GSR/Deploy/Program.cs
+++ b/GSR/Deploy/Program.cs
@@ -5,6 +5,7 @@ var webDir = Path.GetFullPath(Path.Combine(deployDir, "..", "Web"));
 var webProject = Path.Combine(webDir, "Web.csproj");
 var publishDir = Path.Combine(Path.GetTempPath(), "gsr-deploy", Guid.NewGuid().ToString());
 var deploymentToken = Environment.GetEnvironmentVariable("GSR_DeployToken") ?? throw new InvalidOperationException("GSR_DeployToken environment variable not set.");
+var deployEnv = Environment.GetEnvironmentVariable("GSR_DeployEnv") ?? "preview";
 
 // 1. Publish
 Console.WriteLine("Publishing Web project...");
@@ -19,7 +20,7 @@ if (!Directory.Exists(wwwroot))
 
 // 2. Deploy
 Console.WriteLine("Deploying to Azure Static Web Apps...");
-Run("swa.cmd", $"deploy \"{wwwroot}\" --deployment-token \"{deploymentToken}\" --app-location \"{webDir}\"");
+Run("swa.cmd", $"deploy \"{wwwroot}\" --deployment-token \"{deploymentToken}\" --app-location \"{webDir}\" --env \"{deployEnv}\"");
 
 Console.WriteLine("Deploy successful!");
 return 0;