diff --git a/middleware/metrics.py b/middleware/metrics.py
index 2d6f50d..47bdda0 100644
--- a/middleware/metrics.py
+++ b/middleware/metrics.py
@@ -10,7 +10,7 @@ import logging
 from starlette.middleware.base import BaseHTTPMiddleware
 from starlette.requests import Request
 from starlette.responses import Response
-from prometheus_client import Counter, Histogram, generate_latest, CONTENT_TYPE_LSP
+from prometheus_client import Counter, Histogram, generate_latest, CONTENT_TYPE_LATEST
 
 logger = logging.getLogger(__name__)
 
@@ -82,4 +82,4 @@ class PrometheusMiddleware(BaseHTTPMiddleware):
 
 def get_metrics() -> Response:
     body = generate_latest()
-    return Response(content=body, media_type=CONTENT_TYPE_LSP)
+    return Response(content=body, media_type=CONTENT_TYPE_LATEST)