diff --git a/Program.cs b/Program.cs
index 7c6012f..3cf0cd6 100644
--- a/Program.cs
+++ b/Program.cs
@@ -38,7 +38,11 @@ while (true) {
 
   var body = new StringBuilder();
   AppendMetrics(body, computer);
-  var bytes = Encoding.UTF8.GetBytes(body.ToString());
+  var text = body.ToString();
+  // Normalize all line endings to '\n' for Prometheus compatibility
+  text = text.Replace("\r\n", "\n").Replace("\r", "\n");
+  if (!text.EndsWith("\n")) text += "\n";
+  var bytes = Encoding.UTF8.GetBytes(text);
   context.Response.StatusCode = 200;
   context.Response.ContentType = "text/plain; version=0.0.4";
   context.Response.ContentEncoding = Encoding.UTF8;