diff --git a/test/releases.test.js b/test/releases.test.js
index 560957f..c305bf9 100644
--- a/test/releases.test.js
+++ b/test/releases.test.js
@@ -65,6 +65,18 @@ test('fetchReleases 對非 2xx 回應拋錯', async () => {
     );
 });
 
+test('fetchReleases 對無法解析的 JSON 回應拋錯', async () => {
+    await withFetch(
+        async () => jsonResponse('{ this is not valid json', true),
+        async () => {
+            await assert.rejects(
+                () => fetchReleases('https://gitea.example.com/api'),
+                /回傳資料無法解析/,
+            );
+        },
+    );
+});
+
 test('fetchReleases 對非陣列回應拋錯', async () => {
     await withFetch(
         async () => jsonResponse({ message: 'oops' }),