diff --git a/routes/version.cts b/routes/version.cts
index 1ad04ff..f55fc35 100644
--- a/routes/version.cts
+++ b/routes/version.cts
@@ -4,6 +4,7 @@ const express = require('express');
 const router = express.Router();
 const fs = require('fs');
 const path = require('path');
+const { NotFoundError } = require('../utils/apiError.cts');
 
 const HISTORY_PATH = path.join(__dirname, '..', 'HISTORY.md');
 let pkg;
@@ -56,32 +57,17 @@ router.get('/', (req: Req, res: Res) => {
 
 // GET /api/version/history
 router.get('/history', (req: Req, res: Res) => {
+  if (!fs.existsSync(HISTORY_PATH)) throw NotFoundError('Release history not found');
+
+  const history = fs.readFileSync(HISTORY_PATH, 'utf8');
+  let updatedAt = null;
   try {
-    if (!fs.existsSync(HISTORY_PATH)) {
-      return res.status(404).json({
-        error: 'Release history not found',
-        version: pkg.version,
-        history: '',
-        updated_at: null,
-      });
-    }
-
-    const history = fs.readFileSync(HISTORY_PATH, 'utf8');
-    let updatedAt = null;
-    try {
-      updatedAt = fs.statSync(HISTORY_PATH).mtime.toISOString();
-    } catch {
-      updatedAt = null;
-    }
-
-    res.json({
-      version: pkg.version,
-      history,
-      updated_at: updatedAt,
-    });
-  } catch (err) {
-    res.status(500).json({ error: 'Failed to read release history' });
+    updatedAt = fs.statSync(HISTORY_PATH).mtime.toISOString();
+  } catch {
+    updatedAt = null;
   }
+
+  res.json({ version: pkg.version, history, updated_at: updatedAt });
 });
 
 // GET /api/version/update-status — public, returns cached update check (no force-refresh)