diff --git a/middleware.go b/middleware.go
index 9a3adb4..8d99043 100644
--- a/middleware.go
+++ b/middleware.go
@@ -91,6 +91,9 @@ func monitoringMiddleware(h http.Handler) http.Handler {
 			"request.path":    r.URL.Path,
 			"response.size":   m.Written,
 		})
+		if r.RemoteAddr != "" {
+			event.addField("request.ip", r.RemoteAddr)
+		}
 
 		promHTTPRequestCounter.With(prometheus.Labels{
 			"code": fmt.Sprintf("%dXX", m.Code/100),