diff --git a/index.html b/index.html
index d011fd4..2d08b58 100644
--- a/index.html
+++ b/index.html
@@ -990,12 +990,19 @@ async function loadFeed() {
                         }));
                 }
             } catch (_) { /* カスタムソース取得失敗 → デフォルトのみで続行 */ }
-            res = await fetch(FEED_API, {
-                method: 'POST',
-                cache: 'no-store',
-                headers: { 'Content-Type': 'application/json', 'Authorization': `Bearer ${apiKey}` },
-                body: JSON.stringify({ customFeeds }),
-            });
+            try {
+                res = await fetch(FEED_API, {
+                    method: 'POST',
+                    cache: 'no-store',
+                    headers: { 'Content-Type': 'application/json', 'Authorization': `Bearer ${apiKey}` },
+                    body: JSON.stringify({ customFeeds }),
+                });
+            } catch (_) {
+                res = await fetch(FEED_API, { cache: 'no-store' });
+            }
+            if (res.status === 401) {
+                res = await fetch(FEED_API, { cache: 'no-store' });
+            }
         } else {
             res = await fetch(FEED_API, { cache: 'no-store' });
         }