diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bae7bc4..8a2ef8d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,13 +57,18 @@ jobs:
         if: matrix.os == 'ubuntu-latest' && matrix.node-version == 24
         run: npm run test:coverage
 
+      # v5：codecov-action v4 的引导期（下载/连接 codecov.io）TLS 失败不受
+      # fail_ci_if_error 约束，会把整条腿判死（2026-10-05 ubuntu+node24 连挂三次，
+      # 测试与覆盖率本身 fail 0）。v5 走新 CLI 且带 retry_count，引导/上传的
+      # 网络抖动可在步内消化——上报失败仍不应挡 merge。
       - name: Upload coverage to Codecov
         if: matrix.os == 'ubuntu-latest' && matrix.node-version == 24
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: dsh-mneme/coverage/lcov.info
           fail_ci_if_error: false
+          retry_count: 3
 
   # ── 宿主版本兼容腿：0.1.x 老内核 ───────────────────────────────────────────
   # peerDependencies 声明覆盖三段（0.1.0-rc.6+ / 0.1.5-rc.0+ / 0.2.0-rc.0+），而