diff --git a/functions/infra/http_logger_middleware.go b/functions/infra/http_logger_middleware.go
index 8ab8e243..fc4bb48a 100644
--- a/functions/infra/http_logger_middleware.go
+++ b/functions/infra/http_logger_middleware.go
@@ -1,13 +1,17 @@
 package infra
 
 import (
+	"bufio"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"time"
 )
 
 // responseWriter captura el status code escrito al ResponseWriter.
+// Implementa http.Hijacker y http.Flusher delegando al writer subyacente
+// para preservar WebSocket upgrade y SSE.
 type responseWriter struct {
 	http.ResponseWriter
 	status int
@@ -18,6 +22,23 @@ func (rw *responseWriter) WriteHeader(status int) {
 	rw.ResponseWriter.WriteHeader(status)
 }
 
+// Hijack delega en el ResponseWriter subyacente si lo soporta. Necesario
+// para que WebSocket Upgrade funcione a traves del logger middleware.
+func (rw *responseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	if h, ok := rw.ResponseWriter.(http.Hijacker); ok {
+		return h.Hijack()
+	}
+	return nil, nil, http.ErrNotSupported
+}
+
+// Flush delega en el ResponseWriter subyacente si lo soporta. Necesario
+// para SSE y respuestas streaming.
+func (rw *responseWriter) Flush() {
+	if f, ok := rw.ResponseWriter.(http.Flusher); ok {
+		f.Flush()
+	}
+}
+
 // HTTPLoggerMiddleware retorna un Middleware que loguea metodo, path, status y duracion de cada request.
 // El formato de cada linea es: METHOD /path STATUS DURACIONms
 func HTTPLoggerMiddleware(logger io.Writer) Middleware {