diff --git a/.gitea/workflows/verify.yml b/.gitea/workflows/verify.yml
index ce3509e..9a0d329 100644
--- a/.gitea/workflows/verify.yml
+++ b/.gitea/workflows/verify.yml
@@ -14,8 +14,14 @@ jobs:
       - uses: actions/setup-node@v4
         with: { node-version: 22, cache: npm }
       - run: npm ci
+      - run: npm audit --omit=dev --audit-level=high
       - run: npx tsc --noEmit
       - run: npm test
+      - run: npm run sbom -- artifacts/mebbling.spdx.json
+      - uses: actions/upload-artifact@v4
+        with:
+          name: mebbling-sbom-${{ gitea.sha }}
+          path: artifacts/mebbling.spdx.json
       - run: docker build --build-arg APP_VERSION=${{ gitea.ref_name }} -t mebbling:${{ gitea.sha }} .
       # Optional: configure DEPLOY_WEBHOOK_URL as a Gitea Actions secret to notify your host on a v* tag.
       - if: startsWith(gitea.ref, 'refs/tags/v') && secrets.DEPLOY_WEBHOOK_URL != ''
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3391452..69b4b47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 - Added a repeatable FTS search benchmark and documented PostgreSQL migration decision criteria.
 - Added persistent alert delivery with HTTPS validation, exponential-backoff retries, and Prometheus delivery-state metrics.
 - Added verified backup reports plus optional age-encrypted rclone offsite copies.
+- Added production dependency auditing, reproducible SPDX SBOM generation, and a documented release/upgrade/signing path.
 
 ### Fixed
 
diff --git a/README.md b/README.md
index a8dfba6..3a05a52 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,7 @@ Web 接收使用者操作和 webhook，將同步需求寫入 SQLite 的 `sync_jo
 - 登入在 15 分鐘內最多嘗試 8 次；webhook 與登入限流資料存於 SQLite，同一份資料庫的多個 Web 容器會共用計數。
 - 所有會改變帳號或內容的瀏覽器 POST 都檢查 `Origin`，Webhook 則使用密鑰 URL 驗證，不適用此規則。
 - Gitea Actions 工作流程會在推送／標籤時執行型別檢查、測試與 Docker 建置；若設定 `DEPLOY_WEBHOOK_URL` secret，建立 `v*` tag 時會通知部署端。
+- 工作流程也會對 production dependencies 執行高風險漏洞檢查，並產生 SPDX SBOM artifact；發布、升級與日後映像簽章的流程見 [發布文件](docs/RELEASING.md)。
 
 ## Webhook 設定與驗證
 
diff --git a/docs/RELEASING.md b/docs/RELEASING.md
new file mode 100644
index 0000000..14a37ce
--- /dev/null
+++ b/docs/RELEASING.md
@@ -0,0 +1,17 @@
+# 發布流程
+
+## 每次發布前
+
+1. 確認 `CHANGELOG.md` 的 Unreleased 內容與目標版本一致。
+2. 在本機執行 `npm test`、`npx tsc --noEmit`、`npm run build` 與 `./scripts/backup.sh`。
+3. 提交並推送 `main`，確認 Gitea Actions 的 verify workflow 成功；它會執行 production dependency audit、測試、Docker build，並產生 SPDX SBOM artifact。
+4. 建立 annotated tag，例如：`git tag -a v0.8.0 -m "Mebbling v0.8.0"`，再執行 `git push origin v0.8.0`。
+5. 在 Gitea 的 Releases 以同一個 tag 建立 release；若版本尚供測試，勾選 Pre-release。
+
+## 映像簽章
+
+目前 workflow 只建置本機 Docker image，尚未指定容器 registry，因此不會產生無法驗證的假簽章。要啟用 cosign，先決定可推送的 OCI registry 與 image 名稱，並在 Gitea Actions 設定 `COSIGN_PRIVATE_KEY`、`COSIGN_PASSWORD` 和 registry 登入 secret；之後將 push、`cosign sign` 與 `cosign verify` 加入 tag 工作。部署端應只接受已驗證的 tag digest。
+
+## 升級
+
+升級前先備份。將 `.env` 的 `MEBBLING_VERSION` 改為新 tag，執行 `docker compose pull`（若使用 registry）或重新建置後 `docker compose up -d --no-build`。確認 `/api/health?probe=ready` 與 `/api/metrics`，並觀察 worker log。資料庫 migration 會在 Web／Worker 啟動時自動執行，請勿在升級後直接回退到舊映像。
diff --git a/package.json b/package.json
index 43f7b6e..e72d552 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "build": "HUB_BUILD=1 next build",
     "start": "next start",
     "worker": "tsx worker/index.ts",
-    "test": "TMPDIR=/tmp tsx --test tests/**/*.test.ts"
+    "test": "TMPDIR=/tmp tsx --test tests/**/*.test.ts",
+    "sbom": "node scripts/generate-sbom.mjs"
   },
   "keywords": [],
   "author": "",
diff --git a/scripts/generate-sbom.mjs b/scripts/generate-sbom.mjs
new file mode 100644
index 0000000..be090a3
--- /dev/null
+++ b/scripts/generate-sbom.mjs
@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+import { readFile, mkdir, writeFile } from "node:fs/promises";
+import { dirname, resolve } from "node:path";
+
+const output = resolve(process.argv[2] || "artifacts/mebbling.spdx.json");
+const lock = JSON.parse(await readFile("package-lock.json", "utf8"));
+const packages = Object.entries(lock.packages)
+  .filter(([path, value]) => path.startsWith("node_modules/") && value.version)
+  .map(([path, value]) => {
+    const name = path.slice("node_modules/".length);
+    return { SPDXID: `SPDXRef-Package-${name.replace(/[^A-Za-z0-9.-]/g, "-")}`, name, versionInfo: value.version, downloadLocation: value.resolved || "NOASSERTION", licenseConcluded: "NOASSERTION", licenseDeclared: value.license || "NOASSERTION", checksums: value.integrity ? [{ algorithm: "SHA512", checksumValue: value.integrity.replace(/^sha512-/, "") }] : [], externalRefs: [{ referenceCategory: "PACKAGE-MANAGER", referenceType: "purl", referenceLocator: `pkg:npm/${encodeURIComponent(name).replace("%40", "@")}@${value.version}` }] };
+  });
+const sbom = { spdxVersion: "SPDX-2.3", dataLicense: "CC0-1.0", SPDXID: "SPDXRef-DOCUMENT", name: "mebbling", documentNamespace: `https://gitea.fishking.studio/tangsongdayo/Mebbling/sbom/${lock.version}`, creationInfo: { created: new Date().toISOString(), creators: ["Tool: Mebbling package-lock SBOM generator"] }, packages: [{ SPDXID: "SPDXRef-Mebbling", name: lock.name, versionInfo: lock.version, downloadLocation: "NOASSERTION", licenseConcluded: "NOASSERTION", licenseDeclared: lock.packages[""].license || "NOASSERTION" }, ...packages], relationships: packages.map((item) => ({ spdxElementId: "SPDXRef-Mebbling", relationshipType: "DEPENDS_ON", relatedSpdxElement: item.SPDXID })) };
+await mkdir(dirname(output), { recursive: true });
+await writeFile(output, `${JSON.stringify(sbom, null, 2)}\n`);
+console.log(`Generated SPDX SBOM with ${packages.length} packages: ${output}`);