diff --git a/src/ddns_service/server.py b/src/ddns_service/server.py
index 4d050f7..6f6fc55 100644
--- a/src/ddns_service/server.py
+++ b/src/ddns_service/server.py
@@ -523,8 +523,10 @@ class DDNSRequestHandler(BaseHTTPRequestHandler):
                 f"zone={hostname.zone}{changed_addrs} notify_change={str(notify_change).lower()}"
             )
             self.respond(
-                200, STATUS_NOCHG,
-                {"ipv4": hostname.last_ipv4, "ipv6": hostname.last_ipv6}
+                200,
+                STATUS_NOCHG,
+                ipv4=hostname.last_ipv4,
+                ipv6=hostname.last_ipv6
             )
             return
 
@@ -545,8 +547,10 @@ class DDNSRequestHandler(BaseHTTPRequestHandler):
                 logging.error(f"Sending change notification error: {e}")
 
         self.respond(
-            200, STATUS_GOOD,
-            {"ipv4": hostname.last_ipv4, "ipv6": hostname.last_ipv6}
+            200,
+            STATUS_GOOD,
+            ipv4=hostname.last_ipv4,
+            ipv6=hostname.last_ipv6
         )