diff --git a/ext/lexbor/lexbor/url/url.c b/ext/lexbor/lexbor/url/url.c
index dcea861f7cb..bbb3b5bbd3c 100644
--- a/ext/lexbor/lexbor/url/url.c
+++ b/ext/lexbor/lexbor/url/url.c
@@ -4442,9 +4442,9 @@ lxb_url_api_hash_set(lxb_url_t *url, lxb_url_parser_t *parser,
     return status;
 }
 
-lxb_status_t
-lxb_url_serialize(const lxb_url_t *url, lexbor_serialize_cb_f cb, void *ctx,
-                  bool exclude_fragment)
+static lxb_status_t
+lxb_url_serialize_body(lxb_unicode_idna_t *idna, const lxb_url_t *url, lexbor_serialize_cb_f cb,
+                     void *ctx, bool exclude_fragment)
 {
     lxb_status_t status;
     const lexbor_str_t *str;
@@ -4484,7 +4484,12 @@ lxb_url_serialize(const lxb_url_t *url, lexbor_serialize_cb_f cb, void *ctx,
             lexbor_serialize_write(cb, at_str.data, at_str.length, ctx, status);
         }
 
-        status = lxb_url_serialize_host(&url->host, cb, ctx);
+        if (idna != NULL) {
+            status = lxb_url_serialize_host_unicode(idna, &url->host, cb, ctx);
+        } else {
+            status = lxb_url_serialize_host(&url->host, cb, ctx);
+        }
+
         if (status != LXB_STATUS_OK) {
             return status;
         }
@@ -4529,6 +4534,20 @@ lxb_url_serialize(const lxb_url_t *url, lexbor_serialize_cb_f cb, void *ctx,
     return LXB_STATUS_OK;
 }
 
+lxb_status_t
+lxb_url_serialize(const lxb_url_t *url, lexbor_serialize_cb_f cb, void *ctx,
+                  bool exclude_fragment)
+{
+    return lxb_url_serialize_body(NULL, url, cb, ctx, exclude_fragment);
+}
+
+lxb_status_t
+lxb_url_serialize_idna(lxb_unicode_idna_t *idna, const lxb_url_t *url, lexbor_serialize_cb_f cb,
+                       void *ctx, bool exclude_fragment)
+{
+    return lxb_url_serialize_body(idna, url, cb, ctx, exclude_fragment);
+}
+
 lxb_status_t
 lxb_url_serialize_scheme(const lxb_url_t *url,
                          lexbor_serialize_cb_f cb, void *ctx)
diff --git a/ext/lexbor/lexbor/url/url.h b/ext/lexbor/lexbor/url/url.h
index 2bf2d7c3f59..58952a0f910 100644
--- a/ext/lexbor/lexbor/url/url.h
+++ b/ext/lexbor/lexbor/url/url.h
@@ -403,6 +403,10 @@ LXB_API lxb_status_t
 lxb_url_serialize(const lxb_url_t *url, lexbor_serialize_cb_f cb, void *ctx,
                   bool exclude_fragment);
 
+LXB_API lxb_status_t
+lxb_url_serialize_idna(lxb_unicode_idna_t *idna, const lxb_url_t *url, lexbor_serialize_cb_f cb,
+                       void *ctx, bool exclude_fragment);
+
 LXB_API lxb_status_t
 lxb_url_serialize_scheme(const lxb_url_t *url,
                          lexbor_serialize_cb_f cb, void *ctx);