diff --git a/src/handlers.py b/src/handlers.py
index 87f1624..777d878 100644
--- a/src/handlers.py
+++ b/src/handlers.py
@@ -163,7 +163,7 @@ class BaseHandler(abc.ABC, http.server.BaseHTTPRequestHandler):
                 "date",
             ]:
                 self.send_header(header, value)
-        for name, value in response.cookies:
+        for name, value in dict(response.cookies).items():
             self.send_header("Set-Cookie", f"{name}={value}")
         self.send_header("Content-Length", str(out_size := len(response.content)))
         self.end_headers()