diff --git a/paperforge/skills/paperforge/SKILL.md b/paperforge/skills/paperforge/SKILL.md
index b4dab353..d26e759c 100644
--- a/paperforge/skills/paperforge/SKILL.md
+++ b/paperforge/skills/paperforge/SKILL.md
@@ -8,6 +8,7 @@ description: >
   "讨论" "记录阅读" "记录工作" "总结会话" "提取方法论"
   "记一下" "保存这次" "找证据" "找75 Hz" "找支持" "collection" "库里".
 source: paperforge
+version: 1.5.9
 ---
 
 # PaperForge — Research Memory Runtime
@@ -45,6 +46,7 @@ bootstrap 现在也返回一个 `capabilities` 块（rg, semantic, metadata 等
 **进入任何 molecule 之前，必须完成以下检查。标记为 `[x]` 后才可前进。**
 
 - [ ] **bootstrap completed**：`$VAULT`、`$PYTHON`、`$LIT_DIR`、`$SKILL_DIR` 已定义
+- [ ] **version match**：`$PYTHON -m paperforge --version` 输出的版本号与 SKILL.md frontmatter 的 `version` 字段一致；不一致时提示用户运行 `paperforge update`
 - [ ] **capabilities**：已读取 `capabilities` 块中的 `rg`、`metadata_search`、`paper_context`、`semantic_enabled`、`semantic_ready`
 - [ ] **runtime-health passed**：`safe_read`、`safe_write` 已知，vector 状态已知
 - [ ] **intent identified**：用户意图已映射到一个顶层 research intent
diff --git a/paperforge/skills/paperforge/scripts/pf_bootstrap.py b/paperforge/skills/paperforge/scripts/pf_bootstrap.py
index 4b4ab46b..85dec80e 100644
--- a/paperforge/skills/paperforge/scripts/pf_bootstrap.py
+++ b/paperforge/skills/paperforge/scripts/pf_bootstrap.py
@@ -35,6 +35,12 @@ import subprocess
 import sys
 from pathlib import Path
 
+try:
+    import paperforge
+    SKILL_VERSION = paperforge.__version__
+except Exception:
+    SKILL_VERSION = "unknown"
+
 
 def _find_paperforge_json(start: Path) -> Path | None:
     current = start.resolve()
@@ -288,6 +294,7 @@ def main() -> None:
     }
 
     result["ok"] = True
+    result["skill_version"] = SKILL_VERSION
     json.dump(result, sys.stdout, ensure_ascii=False, indent=2)
 
 
diff --git a/tests/test_pf_bootstrap_capabilities.py b/tests/test_pf_bootstrap_capabilities.py
index b3a403ff..c3a165bc 100644
--- a/tests/test_pf_bootstrap_capabilities.py
+++ b/tests/test_pf_bootstrap_capabilities.py
@@ -75,3 +75,8 @@ def test_bootstrap_capabilities_contract(tmp_path: Path) -> None:
 
     assert "semantic_ready" in caps, "capabilities.semantic_ready missing"
     assert isinstance(caps["semantic_ready"], bool), "capabilities.semantic_ready must be bool"
+
+    # Skill version
+    sv = output.get("skill_version")
+    assert sv is not None, "skill_version missing from bootstrap output"
+    assert isinstance(sv, str) and sv != "unknown", f"skill_version invalid: {sv}"